Kapeliuk, O. (2003) “Gäbrä Iyyäsus Kifle, ታሪኽ ትውልዲ ልሳን ግእዝ Tariḵ tǝwlǝddi lǝssan Gǝʿǝz [History of the origin of the Gǝʿǝz language – in Tigrinya]”, Aethiopica, 6(1), pp. 263–265. doi: 10.15460/aethiopica.6.1.399.