a) General

Alford, John A., "The Grammatical Metaphor: A Survey of its Use in the Middle Age", Speculum 57 (1982), 728-60
Baldwin, John W., The Language of Sex: Five Voices from Northern France around 1200, (Chicago: University of Chicago Press, 1994)
Birkhan, Helmut, "Qu'est-ce qui est preferable de l'heterosexualite ou de l'homosexualite? Le temoignage d'un poeme latin" in Amour, mariage et transgressions au moyen age: Actes du Colloque des 24-27 Mars 1983, ed. Danielle Buschinger & Andre Crespin, Universite de Picardie, Centre d'Etudes Medievales, (Goppingen: Kummerle Verlag, 1984)
Blum, O.J., St. Peter Damien: His Teaching on Spiritual Life, (Washington, D.C.:1947)
Bond, Gerald A., "Locus Amoris': The Poetry of Baudri of Bourgueil and the Formation of the Ovidian Subculture", Traditio 47 (1986), pp. 143-193
Cadden, Joan, "It Takes All Kinds: Sexuality and Gender Differences in Hildegard of Bingen's `Book of Compound Medicine", Traditio 40 (1984), pp. 149-174
Curtius, E.R., European Literature and the Latin Middle Ages, trans. Willard R. Trask, Bollingen Series 36, (New York: Pantheon, 1953) pp. 115 ff. on homosexuality
Daichman, G.S., Wayward Nuns in Medieval Literature, (Syracuse NY: 1986)
Forsyth, Ilene, "The Ganymede Capital at Vezelay", Gesta: International Center of Medieval Art 15:1-2 (1976), pp. 241-246
Green, Richard Hamilton, "Alan of Lille's De planctu Naturae", Speculum 31 (1956), 649-74
Harley M.P., "Narcissus, Hermaphroditus, and Attis: Ovidian Lovers at the Fontaine d'Amours in Guillaume de Lorris's Roman de la Rose", PMLA 101 (1986), pp. 324-337
Herman, Gerald, "The "Sin against Nature" and its Echos in Medieval French Literature", Annuale Medievale 17 (1976), pp. 70-87
Laeuchli, Samuel, Power and Sexuality: The Emergence of Canon Law at the Synod of Elvira, (Philadelphia: 1972)
Latzke, Theresa, "Die Ganymed-Epstein des Hilerius", Mittelateinisches Jahrbuch 18 (1983), pp. 131-159
Lepage, Yvan G., "Francois Villon et l'homosexualite", Le Moyen Age 92:1 (1986), pp. 69-89
Levy, R., "L'Allusion a la Sodomie dans Eneas", Philological Quarterly 27 (1948)
Looks at allusions to sodomy in a twelfth century romance.
McEvoy, James, "Notes on the Prologue of St. Aelred of Rievaulx's `De Spirituali Amacita', with a Translation", Traditio 37 (1981), pp. 149-174
Newall, V., "Folklore and Male Homosexuality", Folklore 97:2 (1986), pp. 123-147
Payer, Pierre J., Sex and the Penitentials: Formation of a Sexual Code 550-1150, (Toronto: Univ. of Toronto Press, 1984)
Sawyer, Erin. "Celibate Pleasures: Masculinity, Desire, and Asceticism in Augustine." Journal of the History of Sexuality 6:1 (1995): 1-29.
Wetherbee, Winthrop, "The Function of Poetry in `De Planctu Naturae" of Alain de Lille", Traditio 25 (1969), 86-125
Unsympathetic to homosexuality. See pp. 102-105
Ziolkowski, Jan, Alan of Lille's Grammar of Sex: The Meaning of Gramma to a Twelfth Century Intellectual, Speculum Anniversary Monographs 10, (Cambridge, Mass.: Medieval Academy of America, 1985) [review, Speculum 63 (1988), p. 1015.]
Alan discussed homosexuality using a metaphor of bad grammar.