Muhamad, Sabat, and Twana Nasih Ahmed. “Image-Based Processing of Paper Currency Recognition and Fake Identification: A Review”. Technium: Romanian Journal of Applied Sciences and Technology 3, no. 7 (August 23, 2021): 46–63. Accessed April 17, 2026. https://www.techniumscience.com.techniumscience.pluscommunication.eu/index.php/technium/article/view/4378.