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

Cotton, Michael E. "The Artistic Integrity of Chaucer's Troilus and Criseyde." 7 (1972): 37-43.
Chaucer associates Criseyde with the moon, thus indicating Criseyde's changeableness. The other planets also function as foreshadowing elements, moving human actions to a different, sometimes ironic, place where Chaucer can connect these events to universal patterns. This link allows Chaucer to make divine and hellish allusions. The imagery of planets and pagan gods develops the theme of Fortuna and instability.

Strange, William C. "The Monk's Tale: A Generous View." 1 (1967): 167-80.
The Monk's Tale is not to be discarded as simply dull. The changes Chaucer made in his sources with regard to Fortune show a pattern for what seems to be a disordered tale. The Monk seems to be struggling between two views of Fortune: the Christian view of Fortune and the "powerful sense of that terrible presence, Fortuna" (170). He never resolves this conflict in his exempla. The Knight interrupts him because the stories the Monk tells suggest that order and justice are not so established in the world as the Knight's Tale would indicate. The Nun's Priest's Tale adds a different dimension to the dialogue about Fortune, examining the problem the Monk has posed, but in a more practical way.