PANT, R. P. A Comparison of Contractive Definitions. The Journal of the Indian Mathematical Society, [S. l.], v. 72, n. 1-4, p. 241–249, 2005. Disponível em: https://informaticsjournals.co.in/index.php/jims/article/view/21836. Acesso em: 8 nov. 2024.