@misc{_Algorismus,
 address={Kraków},
 howpublished={online},
 publisher={Wietor, Hieronim (po 1480-1546/47). Druk},
 language={lat},
 title={Algorismus linealis cum pulchris conditiõibus duarum regularum De tri, vna de integris, altera vero de fractis, regulisq. socialibus, et semper exemplis ydoneis adiunctis [...]},
 type={stary druk},
}