Dinku, Zewde, and Kumudha Raimond. “COUNTERFEIT CURRENCY IDENTIFICATION SYSTEM - A CASE STUDY ON ETHIOPIAN BIRR NOTE”. Zede Journal of Ethiopian Engineers and Architects 26 (January 31, 2023): 73–78. Accessed April 3, 2025. https://ejol.aau.edu.et/index.php/ZEDE/article/view/6585.