PREIDYS, Saulius; SAKALAUSKAS, Leonidas. Analysis of students’ study activities in virtual learning environments using data mining methods. Technological and Economic Development of Economy, [S. l.], v. 16, n. 1, p. 94–108, 2010. DOI: 10.3846/tede.2010.06. Disponível em: https://journals.vilniustech.lt/index.php/TEDE/article/view/5843. Acesso em: 12 may. 2025.