BREITEIG, T. Litteraturanmeldelse – Approaches to Algebra Perspectives for Research and Teaching. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 5, n. 1, p. 59–65, 1997. DOI: 10.7146/nomad.v5i1.146489. Disponível em: https://tidsskrift.dk/NOMAD/article/view/146489. Acesso em: 9 jan. 2025.