Mares-Rodríguez, A., R. M. Flores-Serrano, and A. Gonzalez Sanchez. “Estimation of Classroom Capacity Based on Its Size and Ventilation Capacity During the SARS-CoV-2 Coronavirus Pandemic”. Spanish Journal of Environmental Health, vol. 22, no. 1, June 2022, pp. 91-99, https://ojs.diffundit.com/index.php/rsa/article/view/1151.