VERNITSKI, Alexei. A blind spot in undergraduate mathematics: The circular definition of the length of the circle, and how it can be turned into an enlightening example. MSOR Connections, [S. l.], v. 20, n. 3, p. 85–90, 2022. DOI: 10.21100/msor.v20i3.1300. Disponível em: https://journals.gre.ac.uk/index.php/msor/article/view/1300. Acesso em: 19 oct. 2025.