ELLIOTT, P. D.; ERDOS, P. Some Matching Theorems. The Journal of the Indian Mathematical Society, [S. l.], v. 32, n. 3-4, p. 215–219, 1968. DOI: 10.18311/jims/1968/16770. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/16770. Acesso em: 28 apr. 2024.