Electronic facsimile-editions of the rare book collection at the Vienna Institute of Astronomy Regiomontanus and Calendar Reform Polybiblio: Regiomontanus, Johannes/Santbech, Daniel, ed.
세인트앤드루스 대학교.  Electronic facsimile-editions of the rare book collection at the Vienna Institute of Astronomy→빈 천문 연구원에 있는 소장본의 전자 복제본 Regiomontanus and Calendar Reform→레기오몬타누스와 역법 개혁 Polybiblio: Regiomontanus, Johannes/Santbech, Daniel, ed.