@article{Bullerschen1990,
  author    = {Bullerschen, Klaus-Gerd},
  title     = {Rechenmodelle zur Stromverdr{\"a}ngung in ein- und mehrphasigen elektrischen Leitungen komplexer Geometrie},
  series = {Elektrow{\"a}rme International, Edition B (Industrielle Elektrow{\"a}rme). 48 (1990), H. 4},
  journal   = {Elektrow{\"a}rme International, Edition B (Industrielle Elektrow{\"a}rme). 48 (1990), H. 4},
  isbn      = {0340-3521},
  pages     = {199 -- 210},
  year      = {1990},
  language  = {de}
}
@article{Bullerschen1989,
  author    = {Bullerschen, Klaus-Gerd},
  title     = {Hochtemperaturtechnik. Interne Arbeitssitzung des GVC-Fachausschusses 'Hochtemperaturtechnik'},
  series = {Chemie Ingenieur Technik. 61 (1989), H. 6},
  journal   = {Chemie Ingenieur Technik. 61 (1989), H. 6},
  isbn      = {0009-286X},
  pages     = {510 -- 512},
  year      = {1989},
  language  = {de}
}
@book{Cordewiner1982,
  author    = {Cordewiner, Hans-Josef},
  title     = {Einsatz und Entwicklung der Datenverarbeitung im Bereich der Konstruktion},
  publisher = {Zentralbibliothek d. Kernforschungsanlage},
  address   = {J{\"u}lich},
  pages     = {I, 31 S. : Ill., graph. Darst.},
  year      = {1982},
  language  = {de}
}
@book{Cordewiner1979,
  author    = {Cordewiner, Hans-Josef},
  title     = {Numerische Berechnung des Tritium-Verhaltens von Kugelhaufenreaktoren am Beispiel des AVR-Reaktors},
  publisher = {Zentralbibliothek d. Kernforschungsanlage J{\"u}lich GmbH},
  address   = {J{\"u}lich},
  pages     = {96, 19 S. : 16 graph. Darst.},
  year      = {1979},
  language  = {de}
}
@book{Cordewiner1983,
  author    = {Cordewiner, Hans-Josef},
  title     = {Fertigung und Test der Metallfaltbelaege des TEXTOR-Vakuumgefaesses},
  publisher = {Kernforschungsanlage Juelich GmbH},
  address   = {J{\"u}lich},
  year      = {1983},
  language  = {de}
}
@book{CordewinerSchoernerKochetal.1983,
  author    = {Cordewiner, Hans-Josef and Schoerner, M. and Koch, R. and Bachner, E.},
  title     = {Untersuchungen zum Einsatz eines CAD-Systems fuer den Konstruktionsbereich der Zentralabteilung Allgemeine Technologie der Kernforschungsanlage Juelich},
  publisher = {Gesellschaft fuer Elektronische Informationsverarbeitung},
  address   = {Aachen},
  year      = {1983},
  language  = {de}
}
@article{DahlSuttrop1998,
  author    = {Dahl, G{\"u}nter and Suttrop, F.},
  title     = {Engine control and low-NO(x) combustion for hydrogen fuelled aircraft gas turbines},
  series = {International Journal of Hydrogen Energy. 23 (1998), H. 8},
  journal   = {International Journal of Hydrogen Energy. 23 (1998), H. 8},
  isbn      = {0360-3199},
  pages     = {695 -- 704},
  year      = {1998},
  language  = {en}
}
@book{Ley1998,
  author    = {Ley, Wilfried},
  title     = {Internationale Raumstation : Konfiguration, Betrieb und Nutzung ; Gemeinschaftsveranstaltung der FH Aachen, der DGLR und des DLR / 11. Raumfahrt-Kolloquium an der Fachhochschule Aachen, 26. November 1998. / Ley, Wilfried [Hrsg.]},
  publisher = {DGLR},
  address   = {Bonn},
  isbn      = {3-932182-04-9},
  pages     = {VIII, 208 S. : Ill., graph. Darst., 30 cm},
  year      = {1998},
  language  = {de}
}
@book{Ley1997,
  author    = {Ley, Wilfried},
  title     = {Raumfahrtmissionen zur Erkundung des Sonnensystems : Gemeinschaftsveranstaltung der FH Aachen, der DGLR und des DLR / 10. Raumfahrt-Kolloquium an der Fachhochschule Aachen, 5. November 1997 / Ley, Wilfried [Hrsg.]},
  publisher = {DGLR},
  address   = {Bonn},
  isbn      = {3-922010-99-7},
  pages     = {VIII, 251 S. : Ill., graph. Darst., 30 cm},
  year      = {1997},
  language  = {de}
}
@book{Ley1995,
  author    = {Ley, Wilfried},
  title     = {Tr{\"a}gersysteme : Gemeinschaftsveranstaltung der FH Aachen und der DGLR / 8. Raumfahrt-Kolloquium an der Fachhochschule Aachen, 9. November 1995 / Ley, Wilfried [Hrgs.]},
  publisher = {DGLR},
  address   = {Bonn},
  isbn      = {3-922010-92-X},
  pages     = {VII, 245 S. : Ill., graph. Darst.},
  year      = {1995},
  language  = {de}
}
@book{Ley1990,
  author    = {Ley, Wilfried},
  title     = {Seilgefesselte Raumflugk{\"o}rper, -Tethertechnik- : Gemeinschaftsveranstaltung der FH Aachen und der DGLR ... / 3. Raumfahrt-Kolloquium an der Fachhochschule Aachen, 13. Dezember 1990. [Wiss. Programmleitung: W. Ley, W. Hallmann]},
  publisher = {DGLR},
  address   = {Bonn},
  isbn      = {3-922010-59-8},
  pages     = {Getr. Z{\"a}hl. : graph. Darst.},
  year      = {1990},
  language  = {de}
}
@book{Ley1982,
  author    = {Ley, Wilfried},
  title     = {Bewertung von Solarkollektormessungen unter natuerlichen und simulierten Bedingungen},
  publisher = {Inst. f. Raumsimulation},
  address   = {K{\"o}ln},
  pages     = {190 Seiten, 133 Bilder, 19 Tabellen, 43 Quellen},
  year      = {1982},
  language  = {de}
}
@book{Ley1988,
  author    = {Ley, Wilfried},
  title     = {Handbuch der Raumfahrttechnik : Grundlagen - Nutzung, Raumfahrtsysteme - Produktsicherung u. Produktmanagement / Willi Hallmann; Wilfried Ley},
  publisher = {Hanser},
  address   = {M{\"u}nchen [u.a.]},
  isbn      = {3446151303},
  pages     = {XVIII, 792 S : Ill., graph. Darst.},
  year      = {1988},
  language  = {de}
}
@article{WittmannUlamecRichter1999,
  author    = {Wittmann, Klaus and Ulamec, S and Richter, L},
  title     = {Lander Systems for Planetary Missions},
  series = {Laboratory astrophysics and space research / ed. by P. Ehrenfreund},
  journal   = {Laboratory astrophysics and space research / ed. by P. Ehrenfreund},
  publisher = {Kluwer},
  address   = {Dordrecht [u.a.]},
  isbn      = {0-7923-5338-2},
  pages     = {597 -- 621},
  year      = {1999},
  language  = {en}
}
@article{WittmannSchmidtFeuerbacher1988,
  author    = {Wittmann, Klaus and Schmidt, H. P. and Feuerbacher, B.},
  title     = {Microgravity research and user support in the Space Station era: The Microgravity User Support Centre},
  series = {Acta Astronautica. 17 (1988), H. 11-12},
  journal   = {Acta Astronautica. 17 (1988), H. 11-12},
  isbn      = {0094-5765},
  pages     = {1161 -- 1168},
  year      = {1988},
  language  = {en}
}
@article{WittmannFeuerbacherUlamecetal.1999,
  author    = {Wittmann, Klaus and Feuerbacher, B. and Ulamec, S. and Rosenbauer, H. (u.a.)},
  title     = {Rosetta Lander - In Situ Characterisation of a Comet Nucleus},
  series = {Acta Astronautica. 45 (1999), H. 4-9},
  journal   = {Acta Astronautica. 45 (1999), H. 4-9},
  isbn      = {0094-5765},
  pages     = {389 -- 395},
  year      = {1999},
  language  = {en}
}
@article{WittmannGillessenOttoetal.1996,
  author    = {Wittmann, Klaus and Gillessen, F. and Otto, G. and R{\"o}stel, R.},
  title     = {Undercooling and solidification of metallic melts suspended in a non-nucleating matrix: Experiment NUCAL of the German Spacelab Mission D-2},
  series = {Acta Astronautica. 38 (1996), H. 1},
  journal   = {Acta Astronautica. 38 (1996), H. 1},
  isbn      = {0094-5765},
  pages     = {63 -- 68},
  year      = {1996},
  language  = {en}
}
@article{WittmannKellWinkleretal.1998,
  author    = {Wittmann, Klaus and Kell, G. and Winkler, F. and G{\"u}nther, M. (u.a.)},
  title     = {High resolution temperature measurement technique for materials sciences experiments in space},
  series = {Acta Astronautica. 43 (1998), H. 7-8},
  journal   = {Acta Astronautica. 43 (1998), H. 7-8},
  isbn      = {0094-5765},
  pages     = {385 -- 395},
  year      = {1998},
  language  = {en}
}
@article{WittmannBewersdorffGoerleretal.1993,
  author    = {Wittmann, Klaus and Bewersdorff, A. and G{\"o}rler, G.P. and Otto, G.},
  title     = {Solidification of silver-germanium alloys in an amorphous matrix aboard the space station Mir},
  series = {Acta Astronautica. 29 (1993), H. 7},
  journal   = {Acta Astronautica. 29 (1993), H. 7},
  isbn      = {0094-5765},
  pages     = {547 -- 552},
  year      = {1993},
  language  = {en}
}
@article{WittmannUlamecFeuerbacheretal.1995,
  author    = {Wittmann, Klaus and Ulamec, S. and Feuerbacher, B. and Rosenbauer, H.},
  title     = {Technical Challenge, Scientific Thrill: A Long Term Lander on an Active Comet},
  series = {Lunar and Planetary Science. 26 (1995)},
  journal   = {Lunar and Planetary Science. 26 (1995)},
  isbn      = {0270-9511},
  pages     = {1431 -- 1432},
  year      = {1995},
  language  = {en}
}