BIRCH, B. J.; LEWIS, D. J. ρ-Adic Forms. The Journal of the Indian Mathematical Society, [S. l.], v. 23, n. 1-2, p. 11–32, 1959. DOI: 10.18311/jims/1959/16917. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/16917. Acesso em: 8 may. 2024.