APTE, R. N. Standard Co-Ordinates in Celestial Photography. The Journal of the Indian Mathematical Society, [S. l.], v. 9, n. 3, p. 99–104, 1917. DOI: 10.18311/jims/1917/17605. Disponível em: http://informaticsjournals.com/index.php/jims/article/view/17605. Acesso em: 2 may. 2024.