"IX, promulgated 5 Sept., 1234, use the word "regularis" in a more general sense, in book III, ch. xxxi, which is entitled "De regularibus et transeuntibus ad religionem"."
"REIFENSTUEL, SCHMALZGRUEBER, and other writers on titles xxxi and xxxvi of Bk. III of the Decretals of Gregory IX; FERRARIS,"
"Kaminski, Clinton, 59–111 proceeds from confiscated estates at 78; DHRC XIX: xxxi–xxxii."