https://archive.org/details/daniele-ganser-ukraine-c.-i.-a-kriegslugen-nazis-geheimarmee
https://archive.org/details/das-verschwinden-des-machtigsten-kultgegenstands-der-welt-real-stories-deutschland
https://archive.org/details/philosophisches-gesprach-hegel-die-theorie-von-allem-und-die-zuversicht-des-denkens
https://archive.org/details/prof.-dr.-rainer-mausfeld-zu-krisen-ohnmacht-und-losungen
https://archive.org/details/diskutieren-uber-zivilen-ungehorsam-lanz-und-precht
https://archive.org/details/wisting-und-der-see-des-vergessens-jorn-lier-horst
https://archive.org/details/anton-zeilinger-es-gibt-dinge-die-geschehen-ohne-grund