Cárdenas Pérez, Víctor Adolfo, et al. “Academic Performance in Mathematics at UPNFM CURSPS: Before, During and After the COVID-19 Pandemic”. Paradigma: Revista De Investigación Educativa, vol. 32, no. 53, June 2025, pp. 141-58, doi:10.5377/paradigma.v32i53.20559.