CHRISTIANSEN, A. An analysis of two 19th century Norwegian geometry books, and the reactions they caused. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 20, n. 3-4, p. 35–55, 2015. DOI: 10.7146/nomad.v20i3-4.148691. Disponível em: https://tidsskrift.dk/NOMAD/article/view/148691. Acesso em: 8 jan. 2025.