a) Italy (see also bibliography on Dante)

Brucker, Gene, ed., The Society of Renaissance Florence: A Documentary Study, (New York: Harper and Row, 1971)
Florentine anti-sodomy magistracy pp. 201-206. Now see Michael Rocke's work on this subject.
Gilmour-Bryson, Anne, The Trial of the Templars in the Papal States and the Abruzzi, (Vatican: Biblioteco Apostolica Vaticana, 1982)
Gundesheimer, Werner, "Crime and Punishment in Ferrara", in L. Martines, Violence and Civil Disorder in Italian Cities 1200-1500, (Berkeley: Univ. Of California Press, 1972) pp. 144 ff. - 8 executions of sodomites 1440-1500. 4% of all capital punishments.
Hergemoeller, Bernd-Ulrich. "Sodomiter: Schuldzuschreibungen und Repressionsformen im sp"aten Mittelalter." In Hergemowller, ed., Randgruppen der Spaetmittelalterlichen Gesellschaft, (Warendorf: Fahlbusch Verlag, 1990), 316-56.
Has a lot of Italian material, including a transcription of a Venice case from 1368.
Herlihy, David, "Veillir a Florence au Quattrocento", Annales E.S.C 24 (1969), pp. 1338-1352
Herlihy, David, "The Tuscan Town in the Quattrocento", Medievalia et Humanistica 1 (1970), pp. 81-100
Labalme, Patricia H., "Sodomy and Venetian Justice in the Renaissance", Revue d'histoire du droit 52:3 (1985), pp. 217-254
Munster, Ladislao, "Un processo per sodomia a Venezia e una perizia medica relitiva ad esso", in Frascastro: Studi e Memories per il IV Centenario della Marte, (Verona: Ghidini Fiorini, 1954), pp. 82-84
Pavan, Elizabeth, "Police des moeurs, societe et politique a Venise a la fin du moyen age", Revue Historique 264:2 (1986), pp. 241-288
Posner, Donald, "Caravaggios Homo-erotic Early Works", Art Quarterly 34 (1971), 301-24
Rocke, Michael, Male homosexuality and its regulation in late medieval Florence, (Thesis (Ph. D.)--State University of New York at Binghamton, 1989)
Use police records to examine hundreds of arrests of men for sodomy.
Rocke, Michael, Forbidden Friendships: Homosexuality and Male Culture in Renaissance Florence, (New York : Oxford University Press, 1996)
Derived from Rocke's dissertation. He argues that homosexual activity was a normal part of male life activities in Florence, and not deviant.
Ruggierio, Guido, "Sexual Criminality in the Early Renaissance: Venice 1338-1358", Journal of Social History 8:4 (1975), pp. 18-37
Documents 16 young nobles burnt for sodomy in 14061407.
Ruggiero, Guido, The Boundaries of Eros: Sex, Crime and Sexuality in Renaissance Venice, (New York: Oxford UP, 1985)
Saslow, James M., Ganymede in the Renaissance: Homosexuality in Art and Society, (New Haven: Yale UP, 1986)
Saslow, James. M, "Homosexuality in the Renaissance: Behavior, Identity, Artistic Expression" in Martin Bauml Duberman, Martha Vincus and George Chauncey, eds. Hidden From History, New York: NAL, 1989), 67-75
Sassio, A.C., "Post Classical Lesbiai", Classical Quarterly 33:1 (1983), 90-105
Shevill, F., Medieval and Renaissance Florence 2nd ed., (New York, 1961)
Shreve, Jack, "Homosexuality in Renaissance Italy", Gay Literature 2 (Spring, 1972), pp. 10-14
Trexler, R.C., "La Prostitution Florentine au XVe Siecle: Patronage et Clienteles", Annales ESC 36:6 (1981), pp. 983-1015
Discusses Florentine institution of brothels in 1403 as an antisodomy move.
Wittkower, Rudol and Margot Wittkower, Born Under Saturn, (London: Weidenfield and Nicolson, 1962)
On homosexual artists.