@Misc{BVMC:269734, author = {Matthieu, Pierre}, title = {Summa Constitutionum Summorum Pontificum et rerum in Ecclesia Romana gestarum à Gregorio IX vsque ad Sixtum V}, url = {https://www.cervantesvirtual.com/obra/summa-constitutionum-summorum-pontificum-et-rerum-in-ecclesia-romana-gestarum-a-gregorio-ix-vsque-ad-sixtum-v} }