>Keith Busby, Codex and Context. Reading Old French Verse Narrative in Manuscript, New York, Rodopi, 2002
>Corin F Corley, The second continuation of the old french Perceval. A critical and lexicographical study, TEXTS AND DISSERTATIONS, 24, Londres, The Modern Humanities Research Association, 1987
>William Roach et Marie-Noëlle Toury, Manessier. La troisième continuation du Conte du Graal, Champion Classiques Moyen Age, 13, Paris, Champion, 2004