1. Introduction;Aikhenvald,2006
2. Semitic-Cushitic/Omotic relations;Appleyard,2011
3. Notes on lexical correlations in some Ethiopian languages;Bender;J. Ethiop. Stud.,1966
4. The languages of Ethiopia: a new lexicostatistic classification and some problems of diffusion;Bender;Anthropol. Ling.,1971
5. Language in Ethiopia: implications of a survey for sociolinguistic theory and method;Bender;Lang. Soc.,1972