GJONE, G. ERME: European Society for Research in Mathematics Education er stiftet. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 6, n. 2, p. 68–69, 1998. DOI: 10.7146/nomad.v6i2.146643. Disponível em: https://tidsskrift.dk/NOMAD/article/view/146643. Acesso em: 9 jan. 2025.