TY - JOUR A1 - Schmitt, Hanno T1 - Resultate der Philanthropismusforschung BT - Bildungshorizonte, Netzwerke, Internationalität JF - Die Entdeckung von Volk, Erziehung und Ökonomie im europäischen Netzwerk der Aufklärung Y1 - 2011 SN - 978-3-934686-87-8 SP - 391 EP - 408 PB - Ed. Lumière CY - Bremen ER - TY - JOUR A1 - Goldbeck, Johanna T1 - Das Reckahner Besucherbuch BT - Einblicke in europaweite Netzwerke im Zeitalter der Aufklärung JF - Die Entdeckung von Volk, Erziehung und Ökonomie im europäischen Netzwerk der Aufklärung Y1 - 2011 SN - 978-3-934686-87-8 SP - 463 EP - 478 PB - Ed. Lumière CY - Bremen ER - TY - JOUR A1 - Lindemann-Stark, Anke T1 - Nutzwerk der Aufklärung: Die Korrespondenz Fredrich Eberhard von Rochows JF - Die Entdeckung von Volk, Erziehung und Ökonomie im europäischen Netzwerk der Aufklärung Y1 - 2011 SN - 978-3-934686-87-8 SP - 433 EP - 448 PB - Ed. Lumière CY - Bremen ER - TY - JOUR A1 - Tosch, Frank T1 - Programm, Praxis und Personen der Märkischen Ökonomischen Gesellschaft zu Potsdam um 1800 JF - Die Entdeckung von Volk, Erziehung und Ökonomie im europäischen Netzwerk der Aufklärung Y1 - 2011 SN - 978-3-934686-87-8 SP - 305 EP - 332 PB - Ed. Lumière CY - Bremen ER - TY - BOOK ED - Schmitt, Hanno ED - Böning, Holger ED - Greiling, Werner ED - Siegert, Reinhart T1 - Die Entdeckung von Volk, Erziehung und Ökonomie im europäischen Netzwerk der Aufklärung T3 - Philanthropismus und populäre Aufklärung ; Bd. 1 Presse und Geschichte ; Bd. 58 N2 - Der Band setzt sich mit Entwicklungen auseinander, die seit der Mitte des 18. Jahrhunderts das Bild der europäischen Aufklärung nachhaltig prägten. Die durch ein eng geknüpftes Kommunikationsnetz miteinander verbundenen Gelehrten und Gebildeten begannen sich für das Volk und dessen Lebensumstände, für Erziehung und Bildung sowie für vielerlei ökonomische Fragen zu interessieren. Dabei begnügten sie sich nicht mehr mit dem gelehrten Diskurs über diese Gegenstände, sondern widmeten sich zugleich auch der Umsetzung ihrer aufklärerischen Reformvorstellungen. Aufklärung war also weit mehr als eine abgehobene Geistesbewegung. Diese Tatsache wird mit den Beiträgen des vorliegenden Bandes, der die Ergebnisse einer fächer-, grenzen- und sprachenübergreifenden Tagung dokumentiert, erneut unter Beweis gestellt. Die Erfahrung der beteiligten Wissenschaftler besagt allerdings, dass Erkenntnisse, die in der einen Disziplin als gesichert und selbstverständlich gelten, in benachbarten Fachrichtungen noch keineswegs in der genügenden Breite und Intensität rezipiert sein müssen. Die Herausgeber verstehen die hier präsentierten 24 Aufsätze von Verfassern unterschiedlicher Couleur und verschiedener Nationalität deshalb auch als ein nachdrückliches Plädoyer für ein höheres Maß an Interdisziplinarität in den Geisteswissenschaften. Y1 - 2011 SN - 978-3-934686-87-8 PB - Ed. Lumière CY - Bremen ER - TY - BOOK A1 - Musil, Andreas A1 - Burchard, Daniel T1 - Klausurenkurs im Europarecht BT - ein Fall- und Repetitionsbuch für Pflichtfach und Schwerpunktbereich T3 - Schwerpunkt Klausurenkurs Y1 - 2011 SN - 978-3-8114-9829-7 PB - Müller CY - Heidelberg ET - 2., neu bearb. u. erw. Aufl. ER - TY - GEN A1 - Eccard, Jana A1 - Fey, Karen A1 - Caspers, Barbara A. A1 - Ylönen, Hannu T1 - Breeding state and season affect interspecific interaction types BT - indirect resource competition and direct interference T2 - Postprints der Universität Potsdam Mathematisch-Naturwissenschaftliche Reihe N2 - Indirect resource competition and interference are widely occurring mechanisms of interspecific interactions. We have studied the seasonal expression of these two interaction types within a two-species, boreal small mammal system. Seasons differ by resource availability, individual breeding state and intraspecific social system. Live-trapping methods were used to monitor space use and reproduction in 14 experimental populations of bank voles Myodes glareolus in large outdoor enclosures with and without a dominant competitor, the field vole Microtus agrestis. We further compared vole behaviour using staged dyadic encounters in neutral arenas in both seasons. Survival of the non-breeding overwintering bank voles was not affected by competition. In the spring, the numbers of male bank voles, but not of females, were reduced significantly in the competition populations. Bank vole home ranges expanded with vole density in the presence of competitors, indicating food limitation. A comparison of behaviour between seasons based on an analysis of similarity revealed an avoidance of costly aggression against opponents, independent of species. Interactions were more aggressive during the summer than during the winter, and heterospecific encounters were more aggressive than conspecific encounters. Based on these results, we suggest that interaction types and their respective mechanisms are not either–or categories and may change over the seasons. During the winter, energy constraints and thermoregulatory needs decrease direct aggression, but food constraints increase indirect resource competition. Direct interference appears in the summer, probably triggered by each individual’s reproductive and hormonal state and the defence of offspring against conspecific and heterospecific intruders. Both interaction forms overlap in the spring, possibly contributing to spring declines in the numbers of subordinate species. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 729 KW - rodents KW - aggression KW - seasonality KW - space use KW - winter biology Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-429398 SN - 1866-8372 IS - 729 SP - 623 EP - 633 ER - TY - BOOK A1 - Melzer, Wolfgang A1 - Schubarth, Wilfried A1 - Ehninger, Frank T1 - Gewaltprävention und Schulentwicklung BT - Analysen und Handlungskonzepte T3 - UTB ; 3477 N2 - Gewalt, Aggression und Mobbing in der Schule beschäftigen Schulpraxis und Forschung wie auch die Lehrerausbildung an Hochschulen. Die Autoren - mit langjähriger Erfahrung auf dem Gebiet der Gewaltforschung - bilanzieren den Forschungsstand und geben einen Überblick über Programme der Gewaltprävention, die erst im Kontext der Schulentwicklung wirksam werden. Y1 - 2011 SN - 978-3-8252-3477-5 PB - Klinkhardt CY - Bad Heilbrunn ET - 2., überarb. Aufl. ER - TY - BOOK A1 - Schedler, Kuno A1 - Proeller, Isabella T1 - New Public Management T3 - UTB ; 2132 N2 - New Public Management hat in den vergangenen Jahren die Ansätze und das Verständnis moderner Verwaltungsführung maßgebend beeinflusst. Stossrichtungen und Grundanliegen dieses Modells wurden zum Teil in die Führungspraxis übernommen und stellen in vielerlei Hinsicht nach wie vor Entwicklungsziele und Leitlinien für die Steuerung und Führung der öffentlichen Verwaltung dar. NPM soll die öffentliche Verwaltung an geforderte Neuausrichtungen anpassen und effizienter gestalten. Ziele und Gestaltung der öffentlichen Verwaltung unter NPM und die dazu notwendigen Instrumente werden in diesem Lehrbuch umfassend und strukturiert erläutert. Besonderes Augenmerk wird dabei auf die Veränderungslinien und -ansätze für die Verwaltungsführung gelegt. Y1 - 2011 SN - 978-3-8252-3638-0 PB - Haupt Verlag CY - Bern ET - 5., korrigierte Aufl. ER - TY - GEN A1 - Wagner, Markus A1 - Pywell, Richard F. A1 - Knopp, Tatjana A1 - Bullock, James M. A1 - Heard, Matthew S. T1 - The germination niches of grassland species targeted for restoration BT - effects of seed pre-treatments T2 - Postprints der Universität Potsdam : Mathematisch Naturwissenschaftliche Reihe N2 - Restoration of semi-natural grassland communities involves a combination of (1) sward disturbance to create a temporal window for establishment, and (2) target species introduction, the latter usually by seed sowing. With great regularity, particular species establish only poorly. More reliable establishment could improve outcome of restoration projects and increase cost-effectiveness. We investigated the abiotic germination niche of ten poorly establishing calcareous grassland species by simultaneously exploring the effects of moisture and light availability and temperature fluctuation on percentage germina- tion and speed of germination. We also investigated the effects of three different pre-treatments used to enhance seed germination – cold-stratification, osmo- tic priming and priming in combination with gibberellic acid (GA 3 ) – and how these affected abiotic germination niches. Species varied markedly in width of abiotic germination niche, ranging from Carex flacca with very strict abiotic requirements, to several species reliably germinating across the whole range of abiotic conditions. Our results suggest pronounced differ- ences between species in gap requirements for establishment. Germination was improved in most species by at least one pre-treatment. Evidence for positive effects of adding GA 3 to seed priming solutions was limited. In several species, pre-treated seeds germinated under a wider range of abiotic conditions than untreated seeds. Improved knowledge of species-specific germination niches and the effects of seed pre-treatments may help to improve species establishment by sowing, and to identify species for which sowing at a later stage of restoration or introduction as small plants may represent a more viable strategy. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 675 KW - abiotic germination niche KW - calcareous grassland species KW - cold-stratification KW - osmotic seed priming KW - seed sowing KW - temperature fluctuation Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-413438 SN - 1866-8372 IS - 675 SP - 117 EP - 131 ER - TY - GEN A1 - Vicente, Luis T1 - Ángel J. Gallego, Phase theory T2 - Postprints der Universität Potsdam : Humanwissenschaftliche Reihe T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 539 Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-413116 SN - 1866-8364 IS - 539 SP - 719 EP - 724 ER - TY - GEN A1 - Mickelsson, Jouko A1 - Paycha, Sylvie T1 - The logarithmic residue density of a generalized Laplacian T2 - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - We show that the residue density of the logarithm of a generalized Laplacian on a closed manifold defines an invariant polynomial-valued differential form. We express it in terms of a finite sum of residues of classical pseudodifferential symbols. In the case of the square of a Dirac operator, these formulas provide a pedestrian proof of the Atiyah–Singer formula for a pure Dirac operator in four dimensions and for a twisted Dirac operator on a flat space of any dimension. These correspond to special cases of a more general formula by Scott and Zagier. In our approach, which is of perturbative nature, we use either a Campbell–Hausdorff formula derived by Okikiolu or a noncommutative Taylor-type formula. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 649 KW - residue KW - index KW - Dirac operators Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-413680 SN - 1866-8372 IS - 649 ER - TY - GEN A1 - Sandin, Christer A1 - Steffen, Matthias A1 - Jacob, Ralf A1 - Schönberner, Detlef A1 - Rühling, Ute A1 - Hamann, Wolf-Rainer A1 - Todt, Helge Tobias T1 - The role of heat conduction to the formation of [WC]-type planetary nebulae T2 - Proceedings of the International Astronomical Union N2 - X-ray observations of young Planetary Nebulæ (PNe) have revealed diffuse emission in extended regions around both H-rich and H-deficient central stars. In order to also repro-duce physical properties of H-deficient objects, we have, at first, extended our time-dependent radiation-hydrodynamic models with heat conduction for such conditions. Here we present some of the important physical concepts, which determine how and when a hot wind-blown bubble forms. In this study we have had to consider the, largely unknown, evolution of the CSPN, the slow (AGB) wind, the fast hot-CSPN wind, and the chemical composition. The main conclusion of our work is that heat conduction is needed to explain X-ray properties of wind-blown bubbles also in H-deficient objects. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 582 KW - conduction KW - hydrodynamics KW - planetary nebulae: general Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-413702 SN - 1866-8372 IS - 582 SP - 494 EP - 495 ER - TY - GEN A1 - Straube, Arthur V. A1 - Pikovskij, Arkadij T1 - Pattern formation induced by time-dependent advection T2 - Postprints der Universität Potsdam : Mathematisch Naturwissenschaftliche Reihe N2 - We study pattern-forming instabilities in reaction-advection-diffusion systems. We develop an approach based on Lyapunov-Bloch exponents to figure out the impact of a spatially periodic mixing flow on the stability of a spatially homogeneous state. We deal with the flows periodic in space that may have arbitrary time dependence. We propose a discrete in time model, where reaction, advection, and diffusion act as successive operators, and show that a mixing advection can lead to a pattern-forming instability in a two-component system where only one of the species is advected. Physically, this can be explained as crossing a threshold of Turing instability due to effective increase of one of the diffusion constants. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 575 KW - pattern formation KW - reaction-advection-diffusion equation Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-413140 SN - 1866-8372 IS - 575 SP - 138-147 ER - TY - GEN A1 - Seiß, Martin A1 - Spahn, Frank T1 - Hydrodynamics of Saturn’s dense rings T2 - Postprints der Universität Potsdam : Postprint Mathematisch Naturwissenschaftliche Reihe N2 - The space missions Voyager and Cassini together with earthbound observations re-vealed a wealth of structures in Saturn’s rings. There are, for example, waves being excited at ring positions which are in orbital resonance with Saturn’s moons. Other structures can be assigned to embedded moons like empty gaps, moon induced wakes or S-shaped propeller features. Further-more, irregular radial structures are observed in the range from 10 meters until kilometers. Here some of these structures will be discussed in the frame of hydrodynamical modeling of Saturn’s dense rings. For this purpose we will characterize the physical properties of the ring particle ensemble by mean field quantities and point to the special behavior of the transport coefficients. We show that unperturbed rings can become unstable and how diffusion acts in the rings. Additionally, the alternative streamline formalism is introduced to describe perturbed regions of dense rings with applications to the wake damping and the dispersion relation of the density waves. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 574 KW - granular gas KW - instabilities KW - hydrodynamics KW - planetary rings Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-413139 SP - 191 EP - 218 ER - TY - GEN A1 - Terhalle, Maximilian T1 - Understanding the limits of power BT - America’s Middle East experience T2 - Postprints der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe N2 - The main thread of this review article is to identify the reasons of how to account for the trajectory of American power in the region. Leaving behind the vast amount of highly politicised and hastily compiled volumes of recent years (notwithstanding valuable exceptions), the monographs composed by Lawrence Freedman, Trita Parsi and Oliver Roy attempt to subtly disentangle the intricacies of US involvement in the region from highly distinct perspectives. One caveat for International Relations theorists is that none of the aforementioned authors intends to provide theoretical frameworks for his examination. However, since IR theory has damagingly neglected history in the last decades, the works under review here, at least in part, compensate for this disciplinary and intellectual failure. In conclusion, Freedman’s in-depth approach as a diplomatic historian, with its under-lying reference to the various traditions in US foreign policy thinking, is most illuminating, while Parsi’s contestable account focuses too narrowly on the Iran-Israel relationship. Roy’s explications fail to show how and why the ‘ideological’ element in US foreign policy came to carry exceedingly more weight after 2001 than it did in the 1990s. T3 - Zweitveröffentlichungen der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe - 102 Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-413722 SN - 1867-5808 IS - 102 SP - 631 EP - 640 ER - TY - GEN A1 - Raila, Jens A1 - Rohn, Sascha A1 - Schweigert, Florian J. A1 - Abraham, Getu T1 - Increased antioxidant capacity in the plasma of dogs after a single oral dosage of tocotrienols T2 - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - The intestinal absorption of tocotrienols (TCT) in dogs is, to our knowledge, so far unknown. Adult Beagle dogs (n 8) were administered a single oral dosage of a TCT-rich fraction (TRF; 40 mg/kg body weight) containing 32 % a-TCT, 2 % b-TCT, 27 % g-TCT, 14 % d-TCT and 25 % a-tocopherol (a-TCP). Blood was sampled at baseline (fasted), 1, 2, 3, 4, 5, 6, 8 and 12 h after supplementation. Plasma and chylomicron concentrations of TCT and a-TCP were measured at each time point. Plasma TAG were measured enzymatically, and plasma antioxidant capacity was assessed by the Trolox equivalent antioxidant capacity assay. In fasted dogs, levels of TCT were 0·07 ( SD 0·03) mmol/l. Following the administration of the TRF, total plasma TCT peaked at 2 h (7·16 ( SD 3·88) mmol/l; P, 0·01) and remained above baseline levels (0·67 ( SD 0·44) mmol/l; P, 0·01) at 12 h. The TCT response in chylomicrons paralleled the increase in TCT in plasma with a maximum peak (3·49 ( SD 2·06) mmol/l; P, 0·01) at 2 h post-dosage. a-TCP was the major vitamin E detected in plasma and unaffected by TRF supplementation. The Trolox equivalent values increased from 2 h (776 ( SD 51·2) mmol/l) to a maximum at 12 h (1130 ( SD 7·72) mmol/l; P,0·01). The results show that TCT are detected in postprandial plasma of dogs. The increase in antioxidant capacity suggests a potential beneficial role of TCT supplementation in the prevention or treatment of several diseases in dogs. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 571 KW - dogs KW - tocotrienols KW - intestinal absorption KW - antioxidant capacity Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-413085 SN - 1866-8372 IS - 571 ER - TY - GEN A1 - Shaw, Jason A. A1 - Gafos, Adamantios I. A1 - Hoole, Philip A1 - Zeroual, Chakir T1 - Dynamic invariance in the phonetic expression of syllable structure BT - a case study of Moroccan Arabic consonant clusters T2 - Postprints der Universität Potsdam : Humanwissenschaftliche Reihe N2 - We asked whether invariant phonetic indices for syllable structure can be identified in a language where word-initial consonant clusters, regardless of their sonority profile, are claimed to be parsed heterosyllabically. Four speakers of Moroccan Arabic were recorded, using Electromagnetic Articulography. Pursuing previous work, we employed temporal diagnostics for syllable structure, consisting of static correspondences between any given phonological organisation and its presumed phonetic indices. We show that such correspondences offer only a partial understanding of the relation between syllabic organisation and continuous indices of that organisation. We analyse the failure of the diagnostics and put forth a new approach in which different phonological organisations prescribe different ways in which phonetic indices change as phonetic parameters are scaled. The main finding is that invariance is found in these patterns of change, rather than in static correspondences between phonological constructs and fixed values for their phonetic indices. T3 - Zweitveröffentlichungen der Universität Potsdam : Humanwissenschaftliche Reihe - 516 KW - american english KW - perception KW - speech KW - organization KW - duration KW - patterns KW - syllabication KW - articulation KW - sequences KW - knowledge Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-412479 SN - 1866-8364 IS - 516 SP - 455 EP - 490 ER - TY - GEN A1 - Henze, Andrea A1 - Aumer, Franziska A1 - Grabner, Arthur A1 - Raila, Jens A1 - Schweigert, Florian J. T1 - Genetic differences in the serum proteome of horses, donkeys and mules are detectable by protein profiling T2 - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - Although horses and donkeys belong to the same genus, their genetic characteristics probably result in specific proteomes and post-translational modifications (PTM) of proteins. Since PTM can alter protein properties, specific PTM may contribute to species-specific characteristics. Therefore, the aim of the present study was to analyse differences in serum protein profiles of horses and donkeys as well as mules, which combine the genetic backgrounds of both species. Additionally, changes in PTM of the protein transthyretin (TTR) were analysed. Serum protein profiles of each species (five animals per species) were determined using strong anion exchanger ProteinChips (R) (Bio-Rad, Munich, Germany) in combination with surface-enhanced laser desorption ionisation-time of flight MS. The PTM of TTR were analysed subsequently by immunoprecipitation in combination with matrix-assisted laser desorption ionisation-time of flight MS. Protein profiling revealed species-specific differences in the proteome, with some protein peaks present in all three species as well as protein peaks that were unique for donkeys and mules, horses and mules or for horses alone. The molecular weight of TTR of horses and donkeys differed by 30Da, and both species revealed several modified forms of TTR besides the native form. The mass spectra of mules represented a merging of TTR spectra of horses and donkeys. In summary, the present study indicated that there are substantial differences in the proteome of horses and donkeys. Additionally, the results probably indicate that the proteome of mules reveal a higher similarity to donkeys than to horses. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 567 KW - mass spectrometry KW - post-translational modifications KW - proteome KW - species differences Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-412886 SN - 1866-8372 IS - 567 ER - TY - GEN A1 - Gebser, Martin A1 - Lee, Joohyung A1 - Lierler, Yuliya T1 - On elementary loops of logic programs T2 - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - Using the notion of an elementary loop, Gebser and Schaub (2005. Proceedings of the Eighth International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR’05 ), 53–65) refined the theorem on loop formulas attributable to Lin and Zhao (2004) by considering loop formulas of elementary loops only. In this paper, we reformulate the definition of an elementary loop, extend it to disjunctive programs, and study several properties of elementary loops, including how maximal elementary loops are related to minimal unfounded sets. The results provide useful insights into the stable model semantics in terms of elementary loops. For a nondisjunctive program, using a graph-theoretic characterization of an elementary loop, we show that the problem of recognizing an elementary loop is tractable. On the other hand, we also show that the corresponding problem is coNP-complete for a disjunctive program. Based on the notion of an elementary loop, we present the class of Head-Elementary-loop-Free (HEF) programs, which strictly generalizes the class of Head-Cycle-Free (HCF) programs attributable to Ben-Eliyahu and Dechter (1994. Annals of Mathematics and Artificial Intelligence 12, 53–87). Like an HCF program, an HEF program can be turned into an equivalent nondisjunctive program in polynomial time by shifting head atoms into the body. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 566 KW - stable model semantics KW - loop formulas KW - unfounded sets Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-413091 SN - 1866-8372 IS - 566 ER -