@misc{Firmicus_Maternus_Iulius_(3..-4..?)_De,
 author={Firmicus Maternus, Iulius (3..-4..?)},
 howpublished={online},
 publisher={Aldus Manutius},
 language={lat},
 type={inkunabuł},
 title={De nativitatibus, sive Matheseos libri VIII etc. Ed. Franciscus Niger},
}