Commentary Inf IV 90
For the standard bibliography up to 1965 on the subject of Dante's Ovid see Mazz.1965.1, p. 140. In recent years there has been a growing amount of concerted attention finally being paid to Dante's enormous debt to Ovid, historically overshadowed by the at least apparently even greater one to Virgil. E.g., Jaco.1991.1, containing seven essays on Dante's responses to Ovid, and Pico.1991.1, Pico.1993.1, Pico.1994.1. And see the lengthy treatment by Marthe Dozon (Dozo.1991.1).

Lucan, not studied enough as source for so many of Dante's verses, is also beginning to receive more attention. Again, for the standard bibliography see Mazzoni (Mazz.1965.1), pp. 140-141. And now see Dean.1993.1 and also the contributions of De Angelis and Schnapp, as well as the appended discussion, in Bara.1997.1, pp. 67-145. For a recent study arguing for Dante's close and highly nuanced reading of Lucan, one that helps to account for much of the portrait of his Ulysses, see Stull and Hollander (Stul.1991.1).