https://www.elsalvador.edu.co/wp-content/uploads/2021/03/resolucion-rectoral-2-plan-de-alternancia-Ins-El-Salvador.pdf

https://www.elsalvador.edu.co/wp-content/uploads/2021/03/PROTOCOLO_DE_ALTERNANCIA_-REGRESO-23-DE-MARZO-2021.pdf