@book{Laack1999,
  author    = {Laack, Walter van},
  title     = {Der Schl{\"u}ssel zur Ewigkeit},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-9805239-4-3},
  pages     = {285 S.},
  year      = {1999},
  language  = {de}
}
@book{Laack2000,
  author    = {Laack, Walter van},
  title     = {Pl{\"a}doyer f{\"u}r ein Leben nach dem Tod und eine etwas andere Sicht der Welt},
  edition   = {2., komplett {\"u}berarb. Aufl.},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-89811-818-7},
  pages     = {447 S. : graph. Darst.},
  year      = {2000},
  language  = {de}
}
@book{Laack2007,
  author    = {Laack, Walter van},
  title     = {To perceive the world with logic},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-936624-08-3},
  pages     = {340 S. : Ill., graph. Darst},
  year      = {2007},
  language  = {en}
}
@book{Laack2000,
  author    = {Laack, Walter van},
  title     = {Nobody ever dies! / 1. ed.},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-936624-03-8},
  pages     = {272 S.},
  year      = {2000},
  language  = {en}
}
@book{Laack2012,
  author    = {Laack, Walter van},
  title     = {Schnittstelle Tod: Warum auf ein Danach vertrauen?},
  publisher = {Books on Demand},
  address   = {Norderstedt},
  isbn      = {978-3-936624-14-4},
  pages     = {120 S. : Ill.,graph. Darst.},
  year      = {2012},
  language  = {de}
}
@book{Laack2014,
  author    = {Laack, Walter van},
  title     = {Schnittstelle Tod: Was spricht f{\"u}r unser Weiterleben?},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-936624-19-9},
  pages     = {100 S.},
  year      = {2014},
  language  = {de}
}
@book{Laack2015,
  author    = {Laack, Walter van},
  title     = {Unser Schl{\"u}ssel zur Ewigkeit},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-936624-16-8},
  pages     = {316 S.},
  year      = {2015},
  language  = {de}
}
@book{Laack2018,
  author    = {Laack, Walter van},
  title     = {Sterben und Tod aus wissenschaftlicher Sicht - dying and death from a scientific point of view},
  publisher = {van Laack GmbH},
  address   = {Aachen},
  isbn      = {978-3-936624-41-0},
  pages     = {44 Seiten},
  year      = {2018},
  language  = {de}
}
@book{Laack2019,
  author    = {Laack, Walter van},
  title     = {Weltbilder gestern und heute - Was bleibt und wor{\"u}ber lacht man morgen?},
  series = {Vortr{\"a}ge \& Einsichten, Lectures \& Insights},
  journal   = {Vortr{\"a}ge \& Einsichten, Lectures \& Insights},
  number    = {Band 2},
  publisher = {van Laack Buchverlag},
  address   = {Aachen},
  isbn      = {ISBN 978-3936624-44-1},
  pages     = {56 Seiten},
  year      = {2019},
  language  = {de}
}
@book{Laack2022,
  author    = {Laack, Walter van},
  title     = {Greater Than the Entire Universe},
  publisher = {van Laack GmbH},
  address   = {Aachen},
  isbn      = {978-3-936624-52-6},
  pages     = {120 Seiten},
  year      = {2022},
  language  = {en}
}
@book{Laack2022,
  author    = {Laack, Walter van},
  title     = {Aufruf zum Nachdenken: Corona und neue Kriege - Wie kann die Menschheit {\"u}berleben?},
  publisher = {van Laack GmbH},
  address   = {Aachen},
  isbn      = {978-3-936624-56-4},
  pages     = {56 Seiten},
  year      = {2022},
  language  = {de}
}
@book{Laack2022,
  author    = {Laack, Walter van},
  title     = {Schnittstelle Tod: Was lernen wir durch Corona {\"u}ber Leben und Tod?},
  publisher = {van Laack GmbH},
  address   = {Aachen},
  isbn      = {978-3-936624-53-3},
  pages     = {108 Seiten},
  year      = {2022},
  language  = {de}
}
@book{Laack2021,
  author    = {Laack, Walter van},
  title     = {Gr{\"o}ßer als das ganze Universum},
  publisher = {van Laack GmbH},
  address   = {Aachen},
  isbn      = {978-3-936624-38-0},
  pages     = {120 Seiten},
  year      = {2021},
  language  = {de}
}
@book{Koehler1990,
  author    = {K{\"o}hler, Bernd},
  title     = {Werkstofftechnologie der Luft- und Raumfahrt. Teil 3: HT-Superlegierungen},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-89653-863-2},
  pages     = {191 S. : graph. Darst.},
  year      = {1990},
  language  = {de}
}
@book{Koehler2001,
  author    = {K{\"o}hler, Bernd},
  title     = {Werkstofftechnologie der Luft- und Raumfahrt. Teil 3: HT-Superlegierungen. -2. Auflage},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-89653-863-2},
  pages     = {191 S. : graph. Darst.},
  year      = {2001},
  language  = {de}
}
@book{Koehler1990,
  author    = {K{\"o}hler, Bernd},
  title     = {Werkstofftechnologie der Luft- und Raumfahrt. Teil 4 : Sonderwerkstoffe. -2. Aufl.},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-89653-864-6},
  pages     = {148 S. : graph. Darst.},
  year      = {1990},
  language  = {de}
}
@book{Koehler2001,
  author    = {K{\"o}hler, Bernd},
  title     = {Werkstofftechnologie der Luft- und Raumfahrt. Teil 4 : Sonderwerkstoffe. -4. Aufl.},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-89653-864-6},
  pages     = {148 S. : graph. Darst.},
  year      = {2001},
  language  = {de}
}
@book{Koehler2001,
  author    = {K{\"o}hler, Bernd},
  title     = {Werkstofftechnologie der Luft- und Raumfahrt. Teil 1 : Grundlagen. -4. Aufl.},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-89653-861-6},
  pages     = {183 S. : graph. Darst.},
  year      = {2001},
  language  = {de}
}
@book{Koehler1990,
  author    = {K{\"o}hler, Bernd},
  title     = {Werkstofftechnologie der Luft- und Raumfahrt. Teil 1 : Grundlagen. -2. Aufl.},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-89653-861-6},
  pages     = {183 S. : graph. Darst.},
  year      = {1990},
  language  = {de}
}
@book{Koehler1990,
  author    = {K{\"o}hler, Bernd},
  title     = {Werkstofftechnologie der Luft- und Raumfahrt. Teil 2 : Leichtmetalle und St{\"a}hle},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-89653-862-4},
  pages     = {194 S. : graph. Darst.},
  year      = {1990},
  language  = {de}
}