KAPADIA, D. D. Progress Report. The Journal of the Indian Mathematical Society, [S. l.], v. 9, n. 5, p. 173–173, 1917. DOI: 10.18311/jims/1917/17615. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/17615. Acesso em: 29 apr. 2024.