VERGIDIS, Dimitris; PANAGIOTAKOPOULOS, Chris. Student Dropout at the Hellenic Open University: Evaluation of the Graduate Program, "Studies in Education". The International Review of Research in Open and Distributed Learning, [S. l.], v. 3, n. 2, 2002. DOI: 10.19173/irrodl.v3i2.101. Disponível em: https://www.irrodl.org/index.php/irrodl/article/view/101. Acesso em: 4 dec. 2024.