@misc{Rolandinus_de_Passageriis_(_-1300)_Summa,
 author={Rolandinus de Passageriis ( -1300) and Guilelmus de Gattatico (?-1256)},
 howpublished={online},
 language={lat},
 title={Summa artis notariae},
 title={Tractatus de notulis},
 title={Computus Kalendarii cum tabulis},
 title={Supplicatio ad beatam Mariam Virginem. Absque fine},
 type={rękopis},
}