@misc{Corsonich_Eugeniusz_Perfecta,
 author={Corsonich, Eugeniusz},
 howpublished={online},
 publisher={Drukarnia Pijarów (Warszawa)},
 language={lat},
 type={starodruk},
 title={Perfecta Circuli Quadratura, Ubi Geometrice Demonstratur Esse Peripheriam Diametri Triplam Cum Una Octava},
}