https://archive.org/details/die-etrusker-eine-antike-supermacht-arte
https://archive.org/details/kontrafunk-die-diktatur-der-angst
https://archive.org/details/simply-space-der-fluss-der-zeit
https://archive.org/details/radio-munchen-die-wiederentdeckung-der-seele-und-die-rettung-des-menschseins