Juan Méndez Vergaray, Edward Flores, Cristina Asuncion Lopez Ulloa,. 2021. “The Impact of COVID-19 on the Teaching Work: From Face-to-Face to Virtual”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12 (6):2125-31. https://www.turcomat.org/index.php/turkbilmat/article/view/4818.