RAMESH, V. The Face of the Sky for October and November 1911. The Journal of the Indian Mathematical Society, [S. l.], v. 3, n. 5, p. 195–197, 1911. DOI: 10.18311/jims/1911/17794. Disponível em: http://informaticsjournals.com/index.php/jims/article/view/17794. Acesso em: 2 may. 2024.