@misc{Witelo_(ca_1230-ca_1280)_Perspectiva,
 author={Witelo (ca 1230-ca 1280)},
 copyright={Polska Akademia Nauk},
 address={Wrocław},
 howpublished={online},
 publisher={Ossolineum},
 language={eng},
 language={lat},
 type={książka},
 title={Perspectiva},
 title={Perspectivae liber secundus et liber tertius},
 title={Witelo's Perspectiva},
 title={Witelonis Perspectivae liber secundus et liber tertius = Books II and III of Witelo's Perspectiva},
 keywords={odbicie (optyka), optyka fizjologiczna, Witelo (ca 1230-ca 1280)},
}