RAMESAN, V. The Face of the Sky for September and October. The Journal of the Indian Mathematical Society, [S. l.], v. 4, n. 4, p. 144–145, 1912. DOI: 10.18311/jims/1912/17763. Disponível em: https://informaticsjournals.com/index.php/jims/article/view/17763. Acesso em: 3 may. 2024.