@misc{_Breves,
 howpublished={online},
 publisher={Apud hæeredes Arnoldi Birckmanni},
 language={łacina},
 title={Breves In Sphæram Meditativncvlæ Inclvdentes Methodvm et Isagogen in vniversam Cosmographiam : Hoc Est Geographiæ pariter atque Astronomiæ initiæ ac rudimenta suggerentes.},
}