CARRANZA-MARCHENA, P.; ZAMORA-SÁNCHEZ, G. Challenges and Opportunities during COVID-19: Pedagogical Context at Universidad Nacional and Universidad Estatal a Distancia. Innovaciones Educativas, [S. l.], v. 22, n. Especial, p. 162–170, 2020. DOI: 10.22458/ie.v22iEspecial.3154. Disponível em: https://revistas.uned.ac.cr/index.php/innovaciones/article/view/3154. Acesso em: 31 mar. 2025.