@misc{Heweliusz_Jan_(1611-1687)_Johannis,
 author={Heweliusz, Jan (1611-1687)},
 howpublished={online},
 publisher={Reiniger, Szymon (16..-1712). Druk.},
 language={lat},
 type={stary druk},
 title={Johannis Hevelii Epistola, De Cometa, Anno M DC LXXII, Mense, Martio, & April},
 keywords={Johannes Hevelius, Johannes Hevelke , Johannis Heveli, Gedani},
}