ŻYTKO, Małgorzata. OBUT (Nationwide Research on School Achievements of 9-Year Olds) - Pedagogical Experiment with "Policy Context". INSTED: Interdisciplinary Studies in Education & Society, [S. l.], v. 16, n. 4(64), p. 101–116, 2013. Disponível em: https://insted-tce.pl/ojs/index.php/tce/article/view/135. Acesso em: 30 jun. 2025.