James. Cambridge: Cambridge University Press: 119-147. Klausberger, Friedrich. 1975. Bashanga, das Strafrecht der Baga-Gumuz. Ethnologische Zeitschrift (Zürich) 1: 109-126. Pankhurst, Richard. 1977. The history of Bareya, Sanquella and other Ethiopian slaves from the borderlands of the Sudan. Sudan Notes and Records 58: 1-43. Simmoons, Frederick. 1958. The agricultural implements and cutting tools of Begemder and Semyen, Ethiopia. South West Journal of Anthropology 14: 386-406. Unseth, Peter. 1985. Gumuz: a dialect survey report. Journal of Ethiopian Studies 18: 91-114. Unseth, Peter. 1989. Selected aspects of Gumuz phonology. Proceedings of the 8th International Conference on Ethiopian Studies, Addis Ababa, 1984: 617-32. Uzar, Henning. 1993. “Studies in Gumuz: Sese phonology and TMA system”. In Topics in Nilo-Saharan linguistics, edited by M.L. Bender. Hamburg: Helmut Buske: 347-383. Wallmark, Peter. 1981. “The Bega (Gumuz) of Wellega: Agriculture and subsistence”. In Peoples and cultures of the Ethio-Sudan borderlands, edited by M.L. Bender. East Lansing: Michigan State University, African Studies Centre: 79-116. Zanni, Leone. 1939-40. La Tribù dei Gumus. Note Etnografiche. La Nigrizia. Verona. External links Field recordings from 1980 of traditional music of the Gumuz ethnic group in Sudan’s Blue Nile State Ethnic groups in Ethiopia Ethnic groups in Sudan