Chen, Ning, and Qingqing Yue. “Campus Intelligent Safety Supervision System Based on RFID”. International Journal of Online and Biomedical Engineering (iJOE) 13, no. 11 (November 22, 2017): pp. 152–161. Accessed June 19, 2026. https://online-journals.org/index.php/i-joe/article/view/7663.