@Misc{BVMC:269669, author = {Guillaume d'Auvergne (ca. 1180-1249)}, title = {Guillermi Parisiensis episcopi ... Operû summa diuinarum humanarûue rerû difficultates p[ro]fûdissime resolvês}, url = {https://www.cervantesvirtual.com/obra/guillermi-parisiensis-episcopi-operu-summa-diuinarum-humanaruue-reru-difficultates-profudissime-resolves} }