Trio, P.  (2010).  What Factors Contributed to the Establishment of the Mendicant Orders in Thirteenth-Century Ypres. In M.  Robson & Röhrkasten, J. (Red.), G.  Melville (Vert.), Franciscan organisation in the mendicant context: formal and informal structures of the friars? lives and ministry in the Middle Ages (Vol. 44, pp. 97-112). Berlin: LIT.