RADY, K. A. E. Curvature and Torsion of Curves on Surfaces. The Journal of the Indian Mathematical Society, [S. l.], v. 5, n. 4, p. 131–138, 1913. DOI: 10.18311/jims/1913/17731. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/17731. Acesso em: 6 may. 2024.