CHUGH, R.; KUMAR, S. Minimal Commutativity and Common Fixed Points. The Journal of the Indian Mathematical Society, [S. l.], v. 70, n. 1-4, p. 169–177, 2003. Disponível em: https://informaticsjournals.com/index.php/jims/article/view/21933. Acesso em: 3 may. 2024.