@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{LabischWaehlisch2017,
  author    = {Labisch, Susanna and W{\"a}hlisch, Georg},
  title     = {Technisches Zeichnen: Eigenst{\"a}ndig lernen und effektiv {\"u}ben},
  edition   = {5. Aufl.},
  publisher = {Springer Fachmedien},
  address   = {Wiesbaden},
  isbn      = {978-3-658-18313-4},
  doi       = {10.1007/978-3-658-18313-4},
  pages     = {XI, 300 S. 291 Abb., 50 Abb. in Farbe},
  year      = {2017},
  language  = {de}
}
@book{LabischWaehlisch2020,
  author    = {Labisch, Susanna and W{\"a}hlisch, Georg},
  title     = {Technisches Zeichnen: Eigenst{\"a}ndig lernen und effektiv {\"u}ben},
  edition   = {6th ed.},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-658-30650-2 (E-Book)},
  doi       = {10.1007/978-3-658-30650-2},
  pages     = {Online-Ressource (XI, 296 S. 300 Abb., 81 Abb. in Farbe)},
  year      = {2020},
  language  = {de}
}
@book{LabischWaehlisch2017,
  author    = {Labisch, Susanna and W{\"a}hlisch, Georg},
  title     = {Technisches Zeichnen: Eigenst{\"a}ndig lernen und effektiv {\"u}ben},
  edition   = {5. {\"u}berarbeitete Auflage},
  publisher = {Springer Vieweg},
  address   = {Wiesbaden},
  isbn      = {978-3-658-18312-7},
  doi       = {10.1007/978-3-658-18313-4},
  pages     = {XI, 300 Seiten ; Illustrationen},
  year      = {2017},
  language  = {de}
}
@book{Lassonczyk1987,
  author    = {Lassonczyk, Beate},
  title     = {Immobilisierung l{\"o}slicher organischer Stoffe aus Auflagehorizonten in Sandb{\"o}den},
  address   = {Bonn},
  pages     = {140 S. : graph. Darst.},
  year      = {1987},
  language  = {de}
}
@book{Lassonczyk1988,
  author    = {Lassonczyk, Beate},
  title     = {Verbreitung, Genese und Standorteigenschaften von B{\"o}den im Algarve / Jahn, Reinhold , K. Stahr und B. Lassonczyk (Hrsg.)},
  publisher = {Techn. Univ., Univ.-Bibliothek, Abt. Publ.},
  address   = {Berlin},
  isbn      = {3-7983-1237-0},
  pages     = {VI, 177 S. : Ill., graph. Darst.},
  year      = {1988},
  language  = {de}
}
@book{Laumann2003,
  author    = {Laumann, J{\"o}rg},
  title     = {Zur Berechnung der Eigenwerte und Eigenformen f{\"u}r Stabilit{\"a}tsprobleme des Stahlbaus / J{\"o}rg E. Laumann},
  publisher = {VDI-Verl.},
  address   = {D{\"u}sseldorf},
  isbn      = {3-18-319304-3},
  pages     = {VIII, 154 S. : graph. Darst.},
  year      = {2003},
  language  = {de}
}
@book{Laumann2005,
  author    = {Laumann, J{\"o}rg},
  title     = {Vereinfachte Ermittlung der Einspanntiefe von Stahlst{\"u}tzen in Beton f{\"u}r I-Querschnitte und Biegung um die starke Achse},
  publisher = {Ruhr-Univ. Bochum, Lehrstuhl f{\"u}r Stahl- und Verbundbau},
  address   = {Bochum},
  pages     = {4 S.},
  year      = {2005},
  language  = {de}
}
@book{Laumann2004,
  author    = {Laumann, J{\"o}rg},
  title     = {Ermittlung von Eigenwerten mit dem GAUCHO-Verfahren},
  publisher = {Ruhr-Univ. Bochum, Lehrstuhl f{\"u}r Stahl- und Verbundbau},
  address   = {Bochum},
  pages     = {3 S.},
  year      = {2004},
  language  = {de}
}
@book{Laumann2003,
  author    = {Laumann, J{\"o}rg},
  title     = {Geometrische Ersatzimperfektionen beim Biegedrillknicken von Kragtr{\"a}gern},
  publisher = {Ruhr-Univ. Bochum, Lehrstuhl f{\"u}r Stahl- und Verbundbau},
  address   = {Bochum},
  pages     = {2 S.},
  year      = {2003},
  language  = {de}
}