STĘPIEŃ, Kamil; STĘPIEŃ, Bogdan. Hypothesis of a student’s knowledge curve. Issues in Early Education, [S. l.], v. 27, n. 4, p. 63–73, 2014. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/pwe/article/view/861. Acesso em: 22 jul. 2024.