@misc{Schrohe1995,
  author    = {Schrohe, Elmar},
  title     = {Schulze, B.-W., Pseudo-Differential Boundary Value Problems, Conical Singularities, and Asymptotics; Berlin, Akademie-Verl., 1995},
  year      = {1995},
  language  = {en}
}
@misc{Boelling1995,
  author    = {B{\"o}lling, Reinhard},
  title     = {Tuschmann, W., Hawig, P., Sofia Kowalewskaja, ein Leben f{\"u}r Mathematik und Emanzipation; Basel [u.a.], Birkh{\"a}user, 1993},
  year      = {1995},
  language  = {de}
}
@misc{Boelling1997,
  author    = {B{\"o}lling, Reinhard},
  title     = {Mathematics of the 19th century, geometry, analytic function theory / ed. by A. N. Kolmogorov ... ;Basel [u.a.], Birkh{\"a}user, 1996},
  issn      = {0036-6978},
  year      = {1997},
  language  = {en}
}
@misc{Boelling1997,
  author    = {B{\"o}lling, Reinhard},
  title     = {Guzevic, D., Petr Petrovic Bazen, 1786 - 1838; Sankt-Peterburg, Nauka, 1995},
  year      = {1997},
  language  = {fr}
}
@misc{Schrohe1998,
  author    = {Schrohe, Elmar},
  title     = {Wloka, J. T. [u.a.], Boundary value problems for eliptic systems},
  year      = {1998},
  language  = {en}
}
@misc{Boelling1998,
  author    = {B{\"o}lling, Reinhard},
  title     = {Neuenschwander, E., Riemanns Einf{\"u}hrung in die Funktionentheorie, eine quellenkritische Edition seiner Vorlesungen mit einer Bibliographie zur Wirkungsgeschichte der Riemannschen Funktionentheorie; G{\"o}ttingen, Vandenhoeck und Ruprecht, 1996},
  issn      = {0036-6978},
  year      = {1998},
  language  = {de}
}
@misc{Jahnke1998,
  author    = {Jahnke, Thomas},
  title     = {F{\"u}hrer, L., P{\"a}dagogik des Mathematikunterrichts, eine Einf{\"u}hrung in die Fachdidaktik; Braunschweig, Vieweg, 1997},
  year      = {1998},
  language  = {de}
}
@misc{Schrohe1998,
  author    = {Schrohe, Elmar},
  title     = {Lesch, M., Operators of Fuchs type, conical singularities, and asymptotic methods},
  year      = {1998},
  language  = {en}
}
@misc{Schmidt1998,
  author    = {Schmidt, Hans-J{\"u}rgen},
  title     = {Karsinski, A., Inhomogeneous cosmological models; Cambridge, Univ. Press, 1997},
  year      = {1998},
  language  = {en}
}
@misc{Schrohe1999,
  author    = {Schrohe, Elmar},
  title     = {Lesch, M., Operators of Fuchs type, conical singularities, and asymptotic methods},
  year      = {1999},
  language  = {en}
}