S.GNANA SUGIRTHAM, MYTHILY R. Bibliometric Review of Online Learning Challenges and Opportunities. European Economic Letters (EEL), [S. l.], v. 15, n. 4, p. 846–850, 2025. Disponível em: https://eelet.org.uk/index.php/journal/article/view/3745. Acesso em: 13 oct. 2025.