@article{KotterLiRiekert1990,
  author    = {Kotter, Michael and Li, D. X. and Riekert, Lothar},
  title     = {Partial oxidation of o-xylene to phthalic anhydride in a structured fixed bed containing a sequence of catalysts},
  series = {New developments in selective oxidation : proceedings of an international symposium ; Rimini, Italy, Sept. 18 - 22, 1989 / eds.: G. Centi ... - (Studies in surface science and catalysis ; 55)},
  journal   = {New developments in selective oxidation : proceedings of an international symposium ; Rimini, Italy, Sept. 18 - 22, 1989 / eds.: G. Centi ... - (Studies in surface science and catalysis ; 55)},
  publisher = {Elsevier},
  address   = {Amsterdam},
  isbn      = {0-444-88694-X},
  pages     = {267 -- 274},
  year      = {1990},
  language  = {en}
}
@article{KotterGrazykGeissleetal.1990,
  author    = {Kotter, Michael and Grazyk, J. and Geißle, W. and Roth, A.},
  title     = {Fließeigenschaften von Keramiken f{\"u}r die Herstellung von Katalysatortr{\"a}gern / J. Grazyk ; W. Gleißle ; A. Roth ; M. Kotter},
  series = {Erd{\"o}l \& Kohle, Erdgas, Petrochemie : EKEP. 43 (1990), H. 1},
  journal   = {Erd{\"o}l \& Kohle, Erdgas, Petrochemie : EKEP. 43 (1990), H. 1},
  isbn      = {0014-0058},
  pages     = {27 -- 30},
  year      = {1990},
  language  = {de}
}
@article{KotterXingLi1990,
  author    = {Kotter, Michael and Xing Li, Dong},
  title     = {Partielle Oxidation von o-Xylol zu Phthals{\"a}reanhydrid an V/Ti-Schalenkatalysatoren : [Synopsis 1898]},
  series = {Chemie - Ingenieur - Technik. 62 (1990), H. 11},
  journal   = {Chemie - Ingenieur - Technik. 62 (1990), H. 11},
  isbn      = {0009-286X},
  pages     = {950 -- 951},
  year      = {1990},
  language  = {de}
}
@inproceedings{BerndtKalbeKuropkaetal.1990,
  author    = {Berndt, Heinz and Kalbe, Jochen and Kuropka, Rolf and Meyer-Stork, L. Sebastian and H{\"o}cker, Hartwig},
  title     = {Progress and limitations of the DNA analysis in fine animal fiber identification},
  series = {Proceedings of the 2nd International Symposium on Specialty Animal Fibers : Aachen, October 19 - 20, 1989. - (Schriftenreihe des Deutschen Wollforschungsinstituts an der Technischen Hochschule Aachen e. V. ; 106)},
  booktitle = {Proceedings of the 2nd International Symposium on Specialty Animal Fibers : Aachen, October 19 - 20, 1989. - (Schriftenreihe des Deutschen Wollforschungsinstituts an der Technischen Hochschule Aachen e. V. ; 106)},
  editor    = {K{\"o}rner, Andrea},
  publisher = {Dt. Wollforschungsinst.},
  address   = {Aachen},
  pages     = {259 -- 265},
  year      = {1990},
  language  = {en}
}
@misc{BerndtHoeckerKuropkaetal.1990,
  author    = {Berndt, Heinz and H{\"o}cker, Hartwig and Kuropka, Rolf and Kinkel, Joachim},
  title     = {Silanderivate : Europ{\"a}ische Patenschrift / Offenlegungsschrift},
  publisher = {Europ{\"a}isches Patentamt / Deutsches Patent- und Markenamt},
  address   = {Den Hague / M{\"u}nchen},
  pages     = {10 S. / 13 S. : graph. Darst.},
  year      = {1990},
  language  = {de}
}
@article{PrielmeierSpeedyVardagetal.1989,
  author    = {Prielmeier, Franz and Speedy, R. J. and Vardag, T. and Lang, E. W.},
  title     = {Diffusion in simple fluids / R. J. Speedy; F. X. Prielmeier; T. Vardag; E. W. Lang; H.-D. L{\"u}demann},
  series = {Molecular Physics. 66 (1989), H. 3},
  journal   = {Molecular Physics. 66 (1989), H. 3},
  isbn      = {0026-8976},
  pages     = {577 -- 590},
  year      = {1989},
  language  = {en}
}
@article{LauthSolomunHirschwaldetal.1989,
  author    = {Lauth, Jakob and Solomun, T. and Hirschwald, W. and Christmann, K.},
  title     = {The interaction of carbon monoxide with a ruthenium(1010) surface},
  series = {Surface Science. 210 (1989), H. 1-2},
  journal   = {Surface Science. 210 (1989), H. 1-2},
  isbn      = {0039-6028},
  pages     = {201 -- 224},
  year      = {1989},
  language  = {en}
}
@article{LauthSolomunHirschwaldetal.1989,
  author    = {Lauth, Jakob and Solomun, T. and Hirschwald, W. and Christmann, K.},
  title     = {The interaction of carbon monoxide with a ruthenium(1010) surface},
  series = {Surface Science Letters. 210 (1989), H. 1-2},
  journal   = {Surface Science Letters. 210 (1989), H. 1-2},
  isbn      = {0167-2584},
  pages     = {A74 -- A75},
  year      = {1989},
  language  = {en}
}
@article{Lassonczyk1989,
  author    = {Lassonczyk, Beate},
  title     = {Fossile Bodenbildung in Nord-Somalia},
  series = {Mitteilungen der Deutschen Bodenkundlichen Gesellschaft. 59 (1989), H. 2},
  journal   = {Mitteilungen der Deutschen Bodenkundlichen Gesellschaft. 59 (1989), H. 2},
  isbn      = {0343-107x},
  pages     = {927 -- 930},
  year      = {1989},
  language  = {de}
}
@book{Scherer1989,
  author    = {Scherer, Ulrich W.},
  title     = {Untersuchungen zur Synthese und chemischen Charakterisierung sehr schwerer Elemente / Ulrich W. Scherer},
  publisher = {Gesellschaft f{\"u}r Schwerionenforschung mbH},
  address   = {Darmstadt},
  pages     = {123 S.},
  year      = {1989},
  language  = {de}
}