JOHANSSON, B.; EMANUELSSON, G. Matematikdidaktiska "miljöer". NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 4, n. 1, p. 4–6, 1996. DOI: 10.7146/nomad.v4i1.146191. Disponível em: https://tidsskrift.dk/NOMAD/article/view/146191. Acesso em: 9 jan. 2025.