See in particular Shawn Eyer, “The Strange Case of the Secret Gospel According to Mark: How Morton Smith’s Discovery of a Lost Letter by Clement of Alexandria Scandalized Biblical Scholarship,” Alexandria: The Journal for the Western Cosmological Traditions 3 (1995), pp. 103–129. See the surveys of the reactions in Scott G. Brown, Mark’s Other Gospel: Rethinking Morton Smith’s Controversial Discovery (Studies in Christianity and Judaism 15; Waterloo, Ontario: Wilfred Laurier Univ. Press, 2005), pp. 6–19; Charles W. Hedrick, “The Secret Gospel of Mark. Stalemate in the Academy,” Journal of Early Christian Studies 11 (2003), pp. 135–138.