O. Kapeliuk, “Gäbrä Iyyäsus Kifle, ታሪኽ ትውልዲ ልሳን ግእዝ Tariḵ tǝwlǝddi lǝssan Gǝʿǝz [History of the origin of the Gǝʿǝz language – in Tigrinya]”, Aethiopica, vol. 6, no. 1, pp. 263–265, Jul. 2003.