@misc{Heweliusz_Jan_(1611-1687)_Johannis, author={Heweliusz, Jan (1611-1687)}, howpublished={online}, publisher={Nakładem autora}, publisher={Andrzej Juliusz Müller}, language={lat}, title={Johannis Hevelii Epistolæ II. [...]}, title={De motu lunæ libratorio}, title={De utriusque luminaris defectu anni 1654}, type={starodruk}, }