RAMESH, V. The Face of the Sky for February, March and April 1912. The Journal of the Indian Mathematical Society, [S. l.], v. 4, n. 1, p. 23–24, 1912. DOI: 10.18311/jims/1912/17782. Disponível em: http://www.informaticsjournals.com/index.php/jims/article/view/17782. Acesso em: 19 may. 2024.