GHOSH, Avik W. Engineering Education for the 21st Century:Technology Based Hierarchical Online Learning. Journal of Engineering Education Transformations, [S. l.], p. 50–56, 2016. DOI: 10.16920/jeet/2016/v30i2/105439. Disponível em: https://journaleet.in/index.php/jeet/article/view/1468. Acesso em: 5 dec. 2025.