On common coupled fixed point and coincidence point in C^*-algebra valued b-metric space. Nonlinear Studies, [S. l.], v. 31, n. 4, p. 1233–1245, 2024. Disponível em: https://nonlinearstudies.com/index.php/nonlinear/article/view/3471. Acesso em: 7 dec. 2025.