1. "FMD", Kaggle, (2020). [Online]. Available. https://www.kaggle.com/andrewmvd/face-mask-detection
2. “MMD” Kaggle, (2020). [Online]. Available., https://www.kaggle.com/vtech6/medical-masks-dataset
3. “SMFD” Kaggle, (2020) [Online]. Available, Accessed 25 May 2020 https://github.com/prajnasb/observations
4. Ameur B, Belahcene M, Masmoudi S, Hamida AB (2019) Efficient hybrid descriptor for face verification in the wild using the deep learning approach. https://doi.org/10.3103/S1060992X19030020
5. Belahcene M (2013) Biometric identification and authentification. Phd Thesis. Mohamed Khider University, Biskra