Secundary-school students´ perceived pressure, vitality, and autonomy-support before and during the corona-virus pandemic. Pedagogical Horizons, [S. l.], v. 5, n. 2, p. 161–180, 2021. Disponível em: https://paedagogische-horizonte.at/index.php/ph/article/view/139. Acesso em: 6 sep. 2025.