VERCELLINO, Soledad. School-time Extension: Are the School Structure’s Hard Components Modified? Literature Review on the Subject. Revista Electrónica Educare, [S. l.], v. 16, n. 3, p. 9–36, 2012. DOI: 10.15359/ree.16-3.1. Disponível em: https://www.revistas.una.ac.cr/index.php/EDUCARE/article/view/4773. Acesso em: 22 jan. 2026.