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