REPNIK, Robert; GRUBELNIK, Vladimir. E-Learning Materials for 3rd Grade of Primary School - Physics. International Journal of Emerging Technologies in Learning (iJET), [S. l.], v. 5, n. SI2, p. pp. 43–45, 2010. DOI: 10.3991/ijet.v5iSI2.1254. Disponível em: https://online-journals.org/index.php/i-jet/article/view/1254. Acesso em: 19 apr. 2024.