The significance of open source tools in online education system. International Journal of Engineering and Computer Science, india, v. 12, n. 09, p. 25834–25840, 2023. DOI: 10.18535/ijecs/v12i09.4754. Disponível em: http://ijecs.in/index.php/ijecs/article/view/4754. Acesso em: 11 apr. 2025.