@misc{Regiomontanus_Johannes_(1436–1476)_Calendarium,, author={Regiomontanus, Johannes (1436–1476)}, address={Augsburg}, howpublished={online}, publisher={Ratdolt, Erhard (1447-1527/28). Druk.}, language={lat}, title={Calendarium, Lat.}, type={tekst}, keywords={15 w., Kolekcje Piastowskie, inkunabuły, kalendarium}, }