COLACE, Francesco; DE SANTO, Massimo; GRECO, Luca. SAFE: A Sentiment Analysis Framework for E-Learning. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 9, n. 6, p. pp. 37–41, 2014. DOI: 10.3991/ijet.v9i6.4110. Disponível em: https://online-journals.org/index.php/i-jet/article/view/4110. Acesso em: 24 apr. 2024.