MAFFIA, A.; MARIOTTI, M. A. Semiotic mediation: from multiplication properties to arithmetical expressions. Form@re - Open Journal per la formazione in rete, [S. l.], v. 16, n. 1, p. 4–19, 2016. DOI: 10.13128/formare-17918. Disponível em: https://oaj.fupress.net/index.php/formare/article/view/3578. Acesso em: 20 apr. 2024.