@misc{Praetorius_Johannes_von_Joachimsthal_De,
 author={Praetorius, Johannes von Joachimsthal},
 howpublished={online},
 publisher={in Officina Typographica Catharinae Gerlachin et haeredum Iohannis Montani},
 language={lat},
 type={starodruk},
 title={De cometis, qui antea visi sunt et de eo, qui novissime mense Novembri apparvit, narratio [...]},
 keywords={komety, astronomia, obserwacje astronomiczne},
}