Baumer, 151–152.

M.Piccirillo, “The Christians in Palestine during a Time of Transition: 7th – 9th Centuries”, in A.O’Mahony et al. (eds.), The Christian Heritage in the Holy Land (London, 1995), 47–51; M.Piccirillo, The Mosaics of Jordan (Amman, 1993), 45–47.