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

Yates, Donald. "Chanticleer's Latin Ancestors." 18 (1983): 116-26.
Several analogues of the Nun's Priest's Tale are extant, and most include a bird and a fox or wolf. Gallus et Vulpes should be more carefully examined because in addition to similar elements, it also treats the material humorously, laying a foundation for Chaucer's entertaining use of the subject matter in the Nun's Priest's Tale. Isengrimus is a Latin epic analogue, but it differs from the Nun's Priest's Tale in developing a pilgrimage theme. Isengrimus also treats the theme of Fortune.