On the web address :
http://www.apotelesma.it/upload/DimitarKozhuharov.pdf
was published my research based on the one ancient Arabic manuscript and many other scientific papers, where I showed that until the early 9th Century Arab and Persian astrologers used sidereal solar return.After 830 AD began widespread use of tropical solar return.
The article was published by courtesy of Lucia Belicia(Genoa) and Margherita Fiorelllo(Roma).
