SESHU AIYAR, P. V. Pedals and Envelopes. The Journal of the Indian Mathematical Society, [S. l.], v. 3, n. 6, p. 235–237, 1911. DOI: 10.18311/jims/1911/17799. Disponível em: https://informaticsjournals.com/index.php/jims/article/view/17799. Acesso em: 28 apr. 2024.