Karami A, Shakeri R, Sedghi S, Altun І. Coupled fixed point results on metric spaces defined by binary operations. Carpathian Math. Publ. [Internet]. 2018 Dec. 31 [cited 2024 Apr. 25];10(2):313-2. Available from: https://journals.pnu.edu.ua/index.php/cmp/article/view/1491