Harry F. Williams, The unasked questions in the Conte del Graal, Medieval Perspectives, 3/1, 1990 : p. 292-302

Dans IMB 28/1, n° 3103: Discusses Perceval's behaviour in the Grail castle. Chrétien de Troyes chose not to have his heroes succeed in their eschatological missions and hence Perceval's questions, like Gauvain's, are purely rhetorical