Krishna Prasad K. “ABCD Analysis of Fingerprint Biometric Attendance Maintenance System”. International Journal of Applied Engineering and Management Letters (IJAEML) 2, no. 2 (September 10, 2018): 53–70. Accessed March 15, 2025. https://www.srinivaspublication.com/journal/index.php/ijaeml/article/view/210.