BOYARCHUK, Artem. Comparative analysis of models and platforms for the e-learning portals. Journal of Telecommunications and Information Technology, Warsaw, Poland, v. 24, n. 2, p. 74–78, 2006. DOI: 10.26636/jtit.2006.2.368. Disponível em: https://jtit.pl/jtit/article/view/368. Acesso em: 20 aug. 2026.