@misc{Crügerus_Petrus_Theoremata,
 author={Crügerus, Petrus},
 howpublished={online},
 publisher={typis Guilhelmi Guilmothani},
 language={lat},
 title={Theoremata exegetica de cometis tam in genere quam in specie de Iribus aevi nostris insignioribus...},
 type={stary druk},
 keywords={Krüger, Peter (1580-1639), Keckermann, Bartholomäus (1572-1609), astronomia, rozprawa naukowa, kometa, debata},
}