VIIRMAN, O.; ATTORPS, I.; TOSSAVAINEN, T. Different views – some Swedish mathematics students’ concept images of the function concept. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 15, n. 4, p. 5–24, 2010. DOI: 10.7146/nomad.v15i4.148286. Disponível em: https://tidsskrift.dk/NOMAD/article/view/148286. Acesso em: 8 jan. 2025.