S. Adepoju, T. E. Adahada, O. A. Abisoye, and A. D. Mohammed, “Detection of Face-Mask in Real Time: A Cascaded Bi-Level Feature Extraction Technique Approach”, J. Appl. Methods Electron. Comput., vol. 11, no. 4, pp. 186–196, Dec. 2023, doi: 10.58190/ijamec.2023.66.