@misc{Uguccione_da_Pisa_(ca_1125-1210)_Liber,
 author={Uguccione da Pisa (ca 1125-1210)},
 howpublished={online},
 language={lat},
 title={Liber derivationum},
 title={Index Hugutionis de Pisa Libri derivationum},
 type={rękopis},
}