Tejaswini N., R. Pooja Sri, Neha G. M., Rajeshwar Reddy, Alla Srija. “ Real Time Face Mask Detection and Alert System Using Convolutional Neural Network”. International Journal of Modern Agriculture, vol. 10, no. 2, May 2021, pp. 3772 -81, http://modern-journals.com/index.php/ijma/article/view/1248.