REICH, S.; ZASLAVSKI, A. J. Existence of a fixed point and stability results for contractive mappings on metric spaces with graphs. Topological Methods in Nonlinear Analysis, [S. l.], v. 63, n. 1, p. 233–244, 2024. DOI: 10.12775/TMNA.2023.045. Disponível em: https://apcz.umk.pl/TMNA/article/view/49154. Acesso em: 9 may. 2024.