How Lutherans should (and shouldn't) use the church fathers. Presented at the ETS Annual Meeting, 2008.
Friendship, fellowship and church politics in the Athanasian controversy. ETS Patristics Study Group, 2004.
The authenticity of Jerome's Letter 19. Expanded from the International Patristics Conference, Oxford, 1999.
A debated 4th-century inscription and Pope Liberius. Presented at the North American Patristics Society, 2016.