@Book{BVPB20070014660, title = "Bula de nuestro Sat\'{\i}simo Padre Gregorio XVI, sobre el Rosario Viviente", author = "Iglesia Cat\'{o}lica. Papa (1831-1846: Gregorio XVI)", publisher = "Le\'{o}n : [s.n.", editor = "[s.n.", URL = "https://bvpb.mcu.es/es/consulta/registro.do?id=398312", year = "1832", }