Cyrus Gordon, “אלהים (Elohim) in Its Reputed Meaning of Rulers, Judges,” Journal of Biblical Literature 54 (1935): 139–144.
Lowell Handy, “Sounds, Words and Meanings in Psalm 82,” Journal for the Study of the Old Testament 47 (1990), 51–66.
Michael S. Heiser, “You've Seen One Elohim, You've Seen Them All? A Critique of Mormonism's Use of Psalm 82," FARMS Review 19/1 (2007): 221–266.
Richard Bauckham's Word Biblical Commentary on Jude 6 and 2 Peter 2:4-5 (along with two appendices from Giants: Sons of the Gods, one on extrabiblical literature, one on Jude and 2 Peter).
J. Ramsey Michaels, "The Journey to Heaven: (3:18-22)," 1 Peter, vol. 49, Word Biblical Commentary (Dallas: Word, Incorporated, 1998), 194–222. (Michaels surveys the field of different views and is well acquainted with the ancient literature. I agree with most of his exegesis).