@Misc{BVMC:269315, author = {Juan XXI, Papa}, title = {Iuliani Petri ... Chronicon cum eiusdem aduersariis, et de eremiteriis hispanis breuis descriptio, atque ab eodem variorum carminum collectio, ex bibliotheca olivarensi...}, url = {https://www.cervantesvirtual.com/obra/iuliani-petri-chronicon-cum-eiusdem-aduersariis-et-de-eremiteriis-hispanis-breuis-descriptio-atque-ab-eodem-variorum-carminum-collectio-ex-bibliotheca-olivarensi} }