Kowalski, Marcin, and Krzysztof Mierzejewski. “Detection of 3D Face Masks With Thermal Infrared Imaging and Deep Learning Techniques”. Photonics Letters of Poland 13, no. 2 (June 30, 2021): 22–24. Accessed April 19, 2024. https://www.photonics.pl/PLP/index.php/letters/article/view/13-8.