@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{Hoepner2004,
  author    = {Hoepner, Gert},
  title     = {Info-Web-Generation},
  series = {Dm-compact : academic news for marketeers / Deutscher Direktmarketing Verband e. V.. 2 (2004), H. 3-4},
  journal   = {Dm-compact : academic news for marketeers / Deutscher Direktmarketing Verband e. V.. 2 (2004), H. 3-4},
  isbn      = {1573-3181},
  pages     = {14 -- 20},
  year      = {2004},
  language  = {en}
}
@article{Feiser2004,
  author    = {Feiser, Johannes},
  title     = {Geotechnik},
  series = {Bautechnische Zahlentafeln : [jetzt mit neuer DIN 1052, DIN1053-1 und DIN 1054] / Wendehorst. Hrsg. von Otto W. Wetzell. Bearb. von: Herwig Baumgartner ... . 31., vollst. {\"u}berb. und aktualisierte Aufl.},
  journal   = {Bautechnische Zahlentafeln : [jetzt mit neuer DIN 1052, DIN1053-1 und DIN 1054] / Wendehorst. Hrsg. von Otto W. Wetzell. Bearb. von: Herwig Baumgartner ... . 31., vollst. {\"u}berb. und aktualisierte Aufl.},
  publisher = {Teubner [u.a.]},
  address   = {Stuttgart [u.a.]},
  isbn      = {3-519-55002-4},
  pages     = {1017 -- 1118},
  year      = {2004},
  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{Wrede2005,
  author    = {Wrede, Oliver},
  title     = {Wer nicht h{\"o}ren will muss sehen : ein Pl{\"a}doyer f{\"u}r eine entwurfsbezogene Bildwissenschaft},
  series = {Boxhorn. 12 (2005), H. Sehsturz},
  journal   = {Boxhorn. 12 (2005), H. Sehsturz},
  pages     = {24 -- 25},
  year      = {2005},
  language  = {de}
}
@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{Mohr2005,
  author    = {Mohr, Klaus},
  title     = {Das Bild im Kopf},
  series = {Boxhorn. 12 (2005), H. Sehsturz},
  journal   = {Boxhorn. 12 (2005), H. Sehsturz},
  pages     = {8 -- 9},
  year      = {2005},
  language  = {de}
}
@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}
}