RAMESH, V. The Face of the Sky for December 1911 and January 1912. The Journal of the Indian Mathematical Society, [S. l.], v. 3, n. 6, p. 238–239, 1911. DOI: 10.18311/jims/1911/17801. Disponível em: https://informaticsjournals.com/index.php/jims/article/view/17801. Acesso em: 4 may. 2024.