@book{OPUS4-1635,
  title     = {Joseph Beuys : Natur, Materie, Form},
  editor    = {Zweite, Armin},
  publisher = {Schirmer/Mosel},
  address   = {M{\"u}nchen [u.a.]},
  isbn      = {3-88814-453-1},
  pages     = {360 S. : {\"u}berw. Ill.},
  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}
}
@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{AnikAnik1991,
  author    = {Anik, Sabri and Anik, Salahaddin},
  title     = {Stand der Schweißtechnik in der T{\"u}rkei},
  series = {Schweißen und Schneiden : Fachzeitschrift f{\"u}r Schweißen und verwandte Verfahren},
  volume    = {43},
  journal   = {Schweißen und Schneiden : Fachzeitschrift f{\"u}r Schweißen und verwandte Verfahren},
  number    = {3},
  issn      = {0036-7184},
  pages     = {142 -- 145},
  year      = {1991},
  language  = {de}
}
@article{AnikTopuzTuncel1991,
  author    = {Anik, Sabri and Topuz, A. and Tuncel, H. S.},
  title     = {Einfluß der Parameter beim Diffusionsschweißen der St{\"a}hle X 210 Cr 12 und 25 MoCr 4 auf ihre mechanischen Eigenschaften},
  series = {Schweißen und Schneiden : Fachzeitschrift f{\"u}r Schweißen und verwandte Verfahren},
  volume    = {43},
  journal   = {Schweißen und Schneiden : Fachzeitschrift f{\"u}r Schweißen und verwandte Verfahren},
  number    = {6},
  issn      = {0036-7184},
  pages     = {341 -- 344},
  year      = {1991},
  language  = {de}
}
@article{ArtmannKellerHaasetal.1991,
  author    = {Artmann, Gerhard and Keller, U. and Haas, J. and Amort, U. and Zang, Werner and Karschies, S.},
  title     = {Technik und ausgew{\"a}hlte Applikationen eines Membranbioassays roter Blutzellen},
  series = {Biomedizinische Technik = Biomedical engineering. 36 (1991)},
  volume    = {36},
  journal   = {Biomedizinische Technik = Biomedical engineering. 36 (1991)},
  number    = {S1},
  isbn      = {0013-5585},
  pages     = {450 -- 451},
  year      = {1991},
  language  = {de}
}
@article{ArtmannMontanusTeitel1991,
  author    = {Artmann, Gerhard and Montanus, M. and Teitel, P.},
  title     = {Die photometrische Kapillaraggregation- ein neues Verfahren zur Messung der Erythrozytenaggregation. Montanus, M.; Artmann, Gerhard Michael; Teitel, P.},
  series = {Biomedizinische Technik = Biomedical engineering. 36 (1991)},
  journal   = {Biomedizinische Technik = Biomedical engineering. 36 (1991)},
  isbn      = {0013-5585},
  pages     = {213 -- 215},
  year      = {1991},
  language  = {de}
}
@article{ArtmannWitte1991,
  author    = {Artmann, Gerhard and Witte, Ch.},
  title     = {Expertensystem f{\"u}r Personal Computer zur Strukturbestimmung des Circulus Arteriosus Willisii mittels transkranieller Dopplersonografie. Witte, Ch.; Artmann, Gerhard Michael},
  series = {Biomedizinische Technik = Biomedical engineering. 36 (1991)},
  journal   = {Biomedizinische Technik = Biomedical engineering. 36 (1991)},
  isbn      = {0013-5585},
  pages     = {228 -- 230},
  year      = {1991},
  language  = {de}
}
@article{BaumannGradinger1991,
  author    = {Baumann, Marcus and Gradinger, R.},
  title     = {Distribution of Phytoplankton Communities in Relation to the Large Scale Hydrographical Regime in the Fram Strait 1984 / Gradinger, R. ; Baumann, M.E.M.},
  series = {Marine Biology. 111 (1991), H. 2},
  journal   = {Marine Biology. 111 (1991), H. 2},
  isbn      = {0025-3162},
  pages     = {311 -- 321},
  year      = {1991},
  language  = {en}
}
@article{BaumannHircheKattneretal.1991,
  author    = {Baumann, Marcus and Hirche, H.-J. and Kattner, G. and Gradinger, R.},
  title     = {Plankton distribution and the impact of copepod grazing on primary production in Fram Strait, Greenland Sea / Hirche, H.-J. ; Baumann, M.E.M. ; Kattner, G.; Gradinger, R.},
  series = {Journal of Marine Systems. 2 (1991), H. 3-4},
  journal   = {Journal of Marine Systems. 2 (1991), H. 3-4},
  isbn      = {0924-7963},
  pages     = {477 -- 494},
  year      = {1991},
  language  = {en}
}