<sigh>
Something somewhere is wrong with education when adults (if I may assume this) make such statements. It's been researched to death. The only issues remaining among genuine historical researchers are details, the big picture is established.
Start here if you need it despite the ubiquitousness and easy accessibility of evidence : Amazon.com: The Holocaust Encyclopedia: Books: Judith Tydor Baumel,Walter Laqueur

Zündel, on whom all this BS relies, is insane. You do know that one of his claims is that the Nazis invented and used Flying Saucers, do you ? I don't see that aspect here in Historical Discourse.