RANDAHL, M.; GREVHOLM, B. Learning opportunities offered by a classical calculus textbook. NOMAD Nordic Studies in Mathematics Education, [S. l.], v. 15, n. 2, p. 5–27, 2010. DOI: 10.7146/nomad.v15i2.148241. Disponível em: https://tidsskrift.dk/NOMAD/article/view/148241. Acesso em: 8 jan. 2025.