GREVHOLM, Barbro. Activities for 2009 in the Nordic Graduate School in Mathematics Education. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 13, n. 4, p. 95–99, 2008. DOI: 10.7146/nomad.v13i4.148149. Disponível em: https://tidsskrift.dk/NOMAD/article/view/148149. Acesso em: 7 dec. 2025.