@misc{Germannus_Georgius_Trigonometriae,
 author={Germannus, Georgius},
 howpublished={online},
 publisher={Hünefeld Andrzej},
 language={lat},
 type={starodruk},
 title={Trigonometriae triangulorum Sphaericorum},
 keywords={matematyka 17w., trygonometra},
}