@misc{_Algorismus,
 address={Kraków},
 howpublished={online},
 publisher={Haller, Jan (około 1467-1525)},
 language={lat},
 title={Algorismus linealis cum pulchris conditiõibus duarũ regula[rum] De trivna de integris, altera vero de fractis, regulisq. socialibus, et semper exemplis ydoneis adiunctis [...]},
 type={stary druk},
}