Eros, Agape, and Rhetoric around 1200: Gervase of Melkley’s Ars Poetica and Gottfried von Strassburg’s Tristan Glendinning, Robert J.. "Eros, Agape, and Rhetoric around 1200: Gervase of Melkley’s Ars Poetica and Gottfried von Strassburg’s Tristan." Speculum 67 (1992): 892-925.
