Question: Norbert Reichart is best known for his collaboration with a Swiss author whose books make claims about extraterrestrial influences on what?
Sentence (from "Erich von Däniken"): Erich Anton Paul von Däniken ( ; ] ; born 14 April 1935) is a Swiss author of several books which make claims about extraterrestrial influences on early human culture, including the best-selling "Chariots of the Gods?
Relevant evidence: Yes