The Chaucer Review: An Indexed Bibliography (Vols. 1-30)

Braswell, Mary Flowers. "Chaucer's Palimpsest: Judas Iscariot and the Pardoner's Tale." 29 (1995): 303-10.
The story of Judas Iscariot's betrayal of Christ appears beneath the surface of the text of the Pardoner's Tale, adding an additional layer to the black Communion of the three rioters. Chaucer uses a number of details, like the association of Judas with greed, the oak tree, and the conflation of the story of Judas with that of the Wandering Jew, to add a darker level to his tale.