GREVHOLM, Barbro. Nordic collaboration in mathematics education research. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 14, n. 4, p. 89–100, 2009. DOI: 10.7146/nomad.v14i4.148216. Disponível em: https://tidsskrift.dk/NOMAD/article/view/148216. Acesso em: 7 dec. 2025.