– https://www.youtube.com/watch?v=E5a4Y1U9IW8&t=246s – https://talk.vonabisw.de/Astrologen2/Zoller.mp4
https://avalonlibrary.net/ebooks/Robert%20Zoller%20-%20Diploma%20Course%20in%20Medieval%20Astrology.pdf – Interview – https://www.skyscript.co.uk/zoller.html – Astrowiki – https://www.astro.com/astrowiki/de/Robert_Zoller – Robert Zoller: Pioneer in Reviving Medieval Astrology – https://www.youtube.com/watch?v=E5a4Y1U9IW8&t=1058s – The use of “modern” planets in traditional astrology – https://tonylouis.wordpress.com/2021/03/30/the-use-of-modern-planets-in-traditional-astrology/