Abtew, Adinew, Aychegirew Hadera, and Shumet Sishagn. 2024. “The British Sudan and Western Frontiers of Ethiopia: Encroachment on and Cooperation in Benishangul, 1898-1908”. Ethiopian Journal of Social Sciences 10 (1):110-27. https://journals.bdu.edu.et/index.php/ejss/article/view/1801.