UDOMLERTSAKUL, N.; SUANTAI, S. Fixed point theorems for graph preserving multivalued mappings in complete metric spaces with graph. Interdisciplinary Research Review, [S. l.], v. 11, n. 2, p. 8–12, 2016. Disponível em: https://ph02.tci-thaijo.org/index.php/jtir/article/view/59131. Acesso em: 16 sep. 2026.