MICHAEL, Onuoha. Addressing Pedagogical Usability and Mobility Barriers in E-learning Systems. International Journal of Natural Sciences: Current and Future Research Trends , Jordan, v. 21, n. 1, 2025. Disponível em: https://ijnscfrtjournal.isrra.org/Natural_Sciences_Journal/article/view/353. Acesso em: 22 sep. 2025.