JOHNSEN, F. Dyscalculia – a cognitive approach. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 9, n. 1, p. 3–20, 2004. DOI: 10.7146/nomad.v9i1.147058. Disponível em: https://tidsskrift.dk/NOMAD/article/view/147058. Acesso em: 6 jan. 2025.