@article{Alt1991,
  author    = {Alt, Helmut},
  title     = {Effektivzins und APR},
  series = {Die Bank : Zeitschrift f{\"u}r Bankpolitik und Bankpraxis},
  volume    = {Jg. 31},
  journal   = {Die Bank : Zeitschrift f{\"u}r Bankpolitik und Bankpraxis},
  number    = {H. 4},
  issn      = {0342-3182},
  pages     = {230 -- 231},
  year      = {1991},
  language  = {de}
}
@article{AletseeBaumann1991,
  author    = {Aletsee, Ludwig and Baumann, Marcus},
  title     = {A laboratory incubator equipped with facilities to automatically simulate natural irradiance},
  series = {Boletim do Instituto Oceanogr{\´a}fico / Universidade de S{\~a}o Paulo},
  volume    = {Vol. 39},
  journal   = {Boletim do Instituto Oceanogr{\´a}fico / Universidade de S{\~a}o Paulo},
  number    = {No. 2},
  issn      = {1982-436X; 0080-6331},
  pages     = {155 -- 159},
  year      = {1991},
  language  = {en}
}
@incollection{GidomPietsch1991,
  author    = {Gidom, D. and Pietsch, Wolfram},
  title     = {Integrierte Steuerung von Bauprojekten durch Expertensysteme},
  series = {Dortmunder Expertensystemtage '91 : in Verbindung mit dem 3. Anwenderforum des KI-Verbundes NRW},
  booktitle = {Dortmunder Expertensystemtage '91 : in Verbindung mit dem 3. Anwenderforum des KI-Verbundes NRW},
  publisher = {T{\"U}V Rheinland},
  address   = {K{\"o}ln},
  isbn      = {3-88585-998-X},
  pages     = {356 -- 365},
  year      = {1991},
  language  = {de}
}
@article{GoettscheReillyWittwer1991,
  author    = {G{\"o}ttsche, Joachim and Reilly, S. and Wittwer, Volker},
  title     = {Advanced window systems and building energy performance / S. Reilly ; J. G{\"o}ttsche ; V. Wittwer},
  series = {Solar World Congress, 1991 : proceedings of the biennial congress of the International Solar Energy Society, Denver, Colorado, USA, 19-23 August 1991 / ed. by M. E. Arden ...},
  journal   = {Solar World Congress, 1991 : proceedings of the biennial congress of the International Solar Energy Society, Denver, Colorado, USA, 19-23 August 1991 / ed. by M. E. Arden ...},
  publisher = {Pergamon Press},
  address   = {Oxford [u.a.]},
  isbn      = {0-08-041690-X},
  pages     = {3211 -- 3216},
  year      = {1991},
  language  = {en}
}
@misc{BiselliThoemmesWandrey1991,
  author    = {Biselli, Manfred and Th{\"o}mmes, J{\"o}rg and Wandrey, Christian},
  title     = {Verfahren und Vorrichtung zur Abtrennung von Ammonium aus w{\"a}ßrigen Fl{\"u}ssigkeiten [Europ{\"a}ische Patentanmeldung]},
  pages     = {1 -- 12},
  year      = {1991},
  language  = {de}
}
@article{Weigand1991,
  author    = {Weigand, Christoph},
  title     = {A Solution to the Scheduling Problem Taking into Account Quality},
  series = {Operations research '91 : extended abstracts of the 16th Symposium on Operations Research held at the University of Trier at September 9 - 11, 1991 / [GM{\"O}OR]. Peter Gritzmann ... (eds.)},
  journal   = {Operations research '91 : extended abstracts of the 16th Symposium on Operations Research held at the University of Trier at September 9 - 11, 1991 / [GM{\"O}OR]. Peter Gritzmann ... (eds.)},
  publisher = {Physica-Verl.},
  address   = {Heidelberg},
  isbn      = {3790806080},
  pages     = {373 -- 375},
  year      = {1991},
  language  = {en}
}
@article{Fabo1991,
  author    = {Fabo, Sabine},
  title     = {Joseph Beuys und das Kapital : zur Erweiterung eines Begriffs},
  series = {Diagonal : Zeitschrift der Universit{\"a}t Siegen},
  volume    = {2 (1991)},
  journal   = {Diagonal : Zeitschrift der Universit{\"a}t Siegen},
  number    = {Heft "Geld"},
  isbn      = {0938-7161},
  pages     = {145 -- 152},
  year      = {1991},
  language  = {de}
}
@article{Fabo1991,
  author    = {Fabo, Sabine},
  title     = {Entgrenzung und Vereinnahmung : zum Verh{\"a}ltnis von Kunst und Kunstbetrieb in den 80er Jahren},
  series = {Aufbruch in die Neunziger : Ideen, Entwicklungen, Perspektiven der achtziger Jahre / Christian W. Thomsen (Hrsg.)},
  journal   = {Aufbruch in die Neunziger : Ideen, Entwicklungen, Perspektiven der achtziger Jahre / Christian W. Thomsen (Hrsg.)},
  publisher = {DuMont},
  address   = {K{\"o}ln},
  isbn      = {3-7701-2512-6},
  pages     = {303 -- 333},
  year      = {1991},
  language  = {de}
}
@incollection{OezdilBerndtHoecker1991,
  author    = {{\"O}zdil, S. and Berndt, Heinz and H{\"o}cker, Hartwig},
  title     = {Systematische Erfassung der Best{\"a}ndigkeit von Ryton-, P84- und Dralon ATF 1063-Fasern unter Einwirkung verschiedener NOx-Konzentrationen in einem definierten Temperaturintervall},
  series = {Schriftenreihe des Deutschen Wollforschungsinstitutes an der Technischen Hochschule Aachen e.V.},
  booktitle = {Schriftenreihe des Deutschen Wollforschungsinstitutes an der Technischen Hochschule Aachen e.V.},
  number    = {107},
  publisher = {Dt. Wollforschungsinstitut},
  address   = {Aachen},
  issn      = {0930-3723},
  pages     = {89 -- 129},
  year      = {1991},
  language  = {de}
}
@article{Staat1991,
  author    = {Staat, Manfred},
  title     = {Versagenswahrscheinlichkeit der Prim{\"a}rkreisdruckumschließung eines HTR-Moduls zur Prozeßw{\"a}rmegewinnung unter St{\"o}rfallbedingungen},
  series = {Jahrestagung Kerntechnik '91 / Kerntechnische Gesellschaft e.V. ; Deutsches Atomforum e.V},
  journal   = {Jahrestagung Kerntechnik '91 / Kerntechnische Gesellschaft e.V. ; Deutsches Atomforum e.V},
  publisher = {INFORUM},
  address   = {Bonn},
  pages     = {123 -- 126},
  year      = {1991},
  language  = {de}
}