@incollection{Laack2020,
  author    = {Laack, Walter van},
  title     = {Twee Kanten van {\´e}{\´e}n Medaille},
  series = {Het Geheim van Elysion : 45 Jaar Studies naar Nabij-de-Dood-Ervaringen over Bewustzijn in Liefde zonder Waarheen},
  booktitle = {Het Geheim van Elysion : 45 Jaar Studies naar Nabij-de-Dood-Ervaringen over Bewustzijn in Liefde zonder Waarheen},
  publisher = {Van Warven},
  address   = {Kampen},
  isbn      = {978-94-93175-44-0},
  pages     = {97 -- 105},
  year      = {2020},
  language  = {nl}
}
@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}
}