Gonzalez Dondo, D., J. A. Redolfi, R. G. Araguás, and D. Garcia. “Application of Deep-Learning Methods to Real Time Face Mask Detection”. IEEE Latin America Transactions, vol. 19, no. 6, June 2021, pp. 994-1001, https://latamt.ieeer9.org/index.php/transactions/article/view/4378.