https://archive.org/details/die-munsters-die-doku-zur-serie-bio.
https://archive.org/details/pra-agyptische-technologie-hinterlassenschaft-einer-verschwundenen-hochkultur-universe-inside-you
https://archive.org/details/an-den-grenzen-zwischen-physik-und-psychologie-zoomposium-mit-dr.-dr.-walter-von-lucadou