Stephenson (2016), p. 180 (fn 89) "Thierry 1972, who dates the fresco to as early as the seventh century. However, this seems unlikely, as it would be three hundred years earlier than any other church fresco in the region." Stephenson, Paul (2016), The Serpent Column: A Cultural Biography, Oxford University Press.
Walter (1995), p. 320, citing G. de Jerphanion, Les églises rupestres de Cappadoce, II 1, Paris (1936), p. 322, pl. 187, 2; 189, 2-3. Walter, C. (1995), "The Origins of the Cult of St. George", Revue des études byzantines, 53: 295–326, doi:10.3406/rebyz.1995.1911, ISSN0766-5598.
The Latin epithettyro ("recruit") preceded the Greek and was also variously hellenized as Týrōn (Τύρων), Tírōn (Τίρων), Tḕrōn (Τήρων), and Teírōn (Τείρων).[5]
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Walter (1995), p. 320, citing G. de Jerphanion, Les églises rupestres de Cappadoce, II 1, Paris (1936), p. 322, pl. 187, 2; 189, 2-3. Walter, C. (1995), "The Origins of the Cult of St. George", Revue des études byzantines, 53: 295–326, doi:10.3406/rebyz.1995.1911, ISSN0766-5598.