KANNAN, M. Note on a Cyclic Quadrilateral. The Journal of the Indian Mathematical Society, [S. l.], v. 4, n. 6, p. 217–218, 1912. DOI: 10.18311/jims/1912/17749. Disponível em: https://informaticsjournals.com/index.php/jims/article/view/17749. Acesso em: 7 may. 2024.