Phiangsungnoen S. Ulam-Hyers Stability and Well-posedness of the Fixed Point Problems for Contractive Multi-valued Operator in \(b\)-metric Spaces. Comm. Math. Appl. [Internet]. 2016 Nov. 14 [cited 2024 Jul. 3];7(3):241-62. Available from: https://rgnpublications.com/journals/index.php/cma/article/view/434