Regiomontanus: His Life and Work - E. Zinner, E. Brown - Google Books

https://books.google.de/books?id=dMzSBQAAQBAJ&pg=PA153&lpg=PA153&dq=Budorensis,+Johannes+Michael&source=bl&ots=QFGCSUVwga&sig=UU

The 500th anniversary of Regiomontanus's birth has occasioned this depiction of his life and work. It is the first English translation of Ernst Zinner's monumental biography, plus a number of specially-written supplementary articles which help paint a more…