RAMANATHAN, K. G. The Riemann Sphere in Matric Spaces. The Journal of the Indian Mathematical Society, [S. l.], v. 19, n. 3-4, p. 121–125, 1955. DOI: 10.18311/jims/1955/17008. Disponível em: https://informaticsjournals.com/index.php/jims/article/view/17008. Acesso em: 4 may. 2024.