OSWALD, Esther; VALKANOVER, Stefan; CONZELMANN, Achim. Implementation of an intervention towards altering the self-concept in physical education. Swiss Journal of Educational Research, Bern, v. 35, n. 2, p. 255–274, 2018. DOI: 10.24452/sjer.35.2.4911. Disponível em: https://sjer.ch/article/view/4911. Acesso em: 12 mar. 2025.