Elizabeth Williams, A damsell by herselfe alone: images of magic and femininity from Lanval to Sir Lambewell, Romance Reading on the Book: Essays on Medieval Narrative Presented to Maldwyn Mills, Cardiff, University of Wales, 1996 : p. 155 - 170
Discusses Marie de France's lai of Lanval, Chestre's Sir Laonfal and the anonymous Sir Lambewell