Richard H Rouse et Mary A Rouse, The Commercial production of manuscript books in late 13th and early 14th century Paris, Medieval Book Production. Assessing the Evidence. Proceedings of the second conference of the seminar on the history of the book to 1500. Oxford, july 1988, Los Altos Hills, The red gull Press, 1988 : p. 103-115
Bull cod 1993, 692