CRISTIAN CHIFU. Common fixed point results in extended b-metric spaces endowed with a directed graph. Results in Nonlinear Analysis, [S. l.], v. 2, n. 1, p. 18–24, 2022. Disponível em: https://www.nonlinear-analysis.com/index.php/pub/article/view/18. Acesso em: 15 aug. 2025.