WIDYASARI, W.; SUTOPO, H.; AGUSTIAN, M. QR Code-based Learning Development: Accessing Math Game for Children Learning Enhancement. International Journal of Interactive Mobile Technologies (iJIM), [S. l.], v. 13, n. 11, p. pp. 111–124, 2019. DOI: 10.3991/ijim.v13i11.10976. Disponível em: https://online-journals.org/index.php/i-jim/article/view/10976. Acesso em: 28 sep. 2022.