@incollection{Kohler,
  author    = {Kohler, Ulrich},
  title     = {European Quality of Life Survey},
  series = {Encyclopedia of Quality of Life and Well-Being Research},
  booktitle = {Encyclopedia of Quality of Life and Well-Being Research},
  editor    = {Michalos, Alex C.},
  publisher = {Springer},
  address   = {Dordrecht},
  isbn      = {978-94-007-0752-8},
  doi       = {10.1007/978-94-007-0753-5_939},
  pages     = {2014 -- 2017},
  language  = {en}
}
@article{PostClassKohler2020,
  author    = {Post, Julia C. and Class, Fabian and Kohler, Ulrich},
  title     = {Unit nonresponse biases in estimates of SARS-CoV-2 prevalence},
  series = {Survey research methods},
  volume    = {14},
  journal   = {Survey research methods},
  number    = {2},
  publisher = {European Survey Research Association},
  address   = {Duisburg},
  issn      = {1864-3361},
  doi       = {10.18148/srm/2020.v14i2.7755},
  pages     = {115 -- 121},
  year      = {2020},
  abstract  = {Since COVID-19 became a pandemic, many studies are being conducted to get a better understanding of the disease itself and its spread. One crucial indicator is the prevalence of SARS-CoV-2 infections. Since this measure is an important foundation for political decisions, its estimate must be reliable and unbiased. This paper presents reasons for biases in prevalence estimates due to unit nonresponse in typical studies. Since it is difficult to avoid bias in situations with mostly unknown nonresponse mechanisms, we propose the maximum amount of bias as one measure to assess the uncertainty due to nonresponse. An interactive web application is presented that calculates the limits of such a conservative unit nonresponse confidence interval (CUNCI).},
  language  = {en}
}
@article{ClassKoehlerKrawietz2018,
  author    = {Class, Fabian and K{\"o}hler, Ulrich and Krawietz, Marian},
  title     = {The Potsdam Grievance Statistics File},
  series = {Historical Methods},
  volume    = {51},
  journal   = {Historical Methods},
  number    = {2},
  publisher = {Routledge, Taylor \& Francis Group},
  address   = {Abingdon},
  issn      = {0161-5440},
  doi       = {10.1080/01615440.2018.1429970},
  pages     = {92 -- 114},
  year      = {2018},
  abstract  = {The newly collected Potsdam Grievance Statistics File (PGSF) holds data on the number and topics of grievances (Eingaben) that were addressed to local authorities of the German Democratic Republic (GDR) in the years 1970 to 1989. The PGSF allows quantitative analyses on topics such as participation, quality of life, and value change in the German Democratic Republic. This paper introduces the concepts of the data set and discusses the validity of its contents.},
  language  = {en}
}
@misc{KrawietzKohlerClassetal.2020,
  author    = {Krawietz, Marian and Kohler, Ulrich and Class, Fabian and Albrecht, Sophia and Feuerstein, Collin},
  title     = {The potsdam grievance statistic File (PGSF)},
  doi       = {10.4232/1.12993},
  year      = {2020},
  abstract  = {Der Potsdam Grievance Statistics File (PGSF) ist eine historische Datensammlung von Beschwerden, sog. Eingaben, die in der DDR von deren B{\"u}rgern eingereicht wurden. Die Eingaben wurden schriftlich oder m{\"u}ndlich gestellt und waren an staatliche Institutionen gerichtet. Der Staat z{\"a}hlte diese Eingaben und kategorisierte sie in Eingabenstatistiken. Der PGSF enth{\"a}lt Eingabenstatistiken des Zeitraums 1970-1989 einer Wahrscheinlichkeitsstichprobe von im Jahr 1990 existierenden Kreisen. Zus{\"a}tzlich finden sich Eingabenstatistiken eines Convenience-Samples von Kreisen aus dem Zeitraum 1970-1989.},
  language  = {de}
}
@misc{AlbrechtClassFeuersteinetal.2020,
  author    = {Albrecht, Sophia and Class, Fabian and Feuerstein, Collin and Kohler, Ulrich and Krawietz, Marian},
  title     = {The Potsdam grievance statistics file (PGSF)},
  doi       = {10.4232/1.13615},
  year      = {2020},
  abstract  = {Der Potsdam Grievance Statistics File (PGSF) ist eine historische Datensammlung von Beschwerden, sog. Eingaben, die in der DDR von deren B{\"u}rgern eingereicht wurden. Die Eingaben wurden schriftlich oder m{\"u}ndlich gestellt und waren an staatliche Institutionen gerichtet. Der Staat z{\"a}hlte diese Eingaben und kategorisierte sie in Eingabenstatistiken. Der PGSF enth{\"a}lt Eingabenstatistiken des Zeitraums 1970-1989 einer Wahrscheinlichkeitsstichprobe von im Jahr 1990 existierenden Kreisen. Zus{\"a}tzlich finden sich Eingabenstatistiken eines Convenience-Samples von Kreisen aus dem Zeitraum 1970-1989.},
  language  = {de}
}
@misc{AlbrechtClassGoebeletal.2020,
  author    = {Albrecht, Sophia and Class, Fabian and Goebel, Jan and Kohler, Ulrich and Krawietz, Marian},
  title     = {Leben in der ehemaligen DDR},
  series = {SOEP Survey Papers},
  journal   = {SOEP Survey Papers},
  publisher = {German Institute for Economic Research (DIW Berlin)},
  address   = {Berlin},
  year      = {2020},
  language  = {de}
}
@misc{KrawietzGoebelAlbrechtetal.2019,
  author    = {Krawietz, Marian and Goebel, Jan and Albrecht, Sophia and Class, Fabian and Kohler, Ulrich},
  title     = {Leben in der ehemaligen DDR},
  publisher = {German Institute for Economic Research (DIW Berlin)},
  address   = {Berlin},
  doi       = {10.5684/soep.ddr18},
  year      = {2019},
  language  = {en}
}
@misc{KhalilKohlerTjaden2022,
  author    = {Khalil, Samir and Kohler, Ulrich and Tjaden, Jasper Dag},
  title     = {Is There a Rural Penalty in Language Acquisition? Evidence From Germany's Refugee Allocation Policy},
  series = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe},
  journal   = {Zweitver{\"o}ffentlichungen der Universit{\"a}t Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe},
  publisher = {Universit{\"a}tsverlag Potsdam},
  address   = {Potsdam},
  issn      = {1867-5808},
  doi       = {10.25932/publishup-56626},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-566264},
  pages     = {1 -- 11},
  year      = {2022},
  abstract  = {Emerging evidence has highlighted the important role of local contexts for integration trajectories of asylum seekers and refugees. Germany's policy of randomly allocating asylum seekers across Germany may advantage some and disadvantage others in terms of opportunities for equal participation in society. This study explores the question whether asylum seekers that have been allocated to rural areas experience disadvantages in terms of language acquisition compared to those allocated to urban areas. We derive testable assumptions using a Directed Acyclic Graph (DAG) which are then tested using large-N survey data (IAB-BAMF-SOEP refugee survey). We find that living in a rural area has no negative total effect on language skills. Further the findings suggest that the "null effect" is the result of two processes which offset each other: while asylum seekers in rural areas have slightly lower access for formal, federally organized language courses, they have more regular exposure to German speakers.},
  language  = {en}
}
@incollection{Kohler2015,
  author    = {Kohler, Ulrich},
  title     = {Variance Inflation Factor},
  series = {Methoden-Lexikon f{\"u}r die Sozialwissenschaften},
  booktitle = {Methoden-Lexikon f{\"u}r die Sozialwissenschaften},
  editor    = {Diaz-Bone, Rainer and Weischer, Christoph},
  publisher = {Springer},
  address   = {Wiesbaden},
  isbn      = {978-3-531-16629-2},
  doi       = {10.1007/978-3-531-18889-8_22},
  pages     = {423 -- 423},
  year      = {2015},
  language  = {de}
}
@incollection{Kohler2015,
  author    = {Kohler, Ulrich},
  title     = {Cook's Distanz},
  series = {Methoden-Lexikon f{\"u}r die Sozialwissenschaften},
  booktitle = {Methoden-Lexikon f{\"u}r die Sozialwissenschaften},
  editor    = {Diaz-Bone, Rainer and Weischer, Christoph},
  publisher = {Springer Fachmedien},
  address   = {Wiesbaden},
  isbn      = {978-3-531-16629-2},
  doi       = {10.1007/978-3-531-18889-8_3},
  pages     = {69 -- 69},
  year      = {2015},
  language  = {de}
}