B. GEETHALAKSHMI; R. HEMAVATHY. Non-self Mapping in Metric Space of Hyperbolic Type. International Journal of Mathematics And its Applications, [S. l.], v. 7, n. 3, p. 77–83, 2019. Disponível em: http://ijmaa.in/index.php/ijmaa/article/view/231. Acesso em: 7 may. 2024.