Merghadi, F., and A. Aliouche. “A RELATED FIXED POINT THEOREM IN $n$ COMPLETE FUZZY METRIC SPACES”. Journal of Nonlinear Analysis and Optimization: Theory & Applications (JNAO), vol. 3, no. 2, Sept. 2012, pp. 293-02, https://ph03.tci-thaijo.org/index.php/jnao/article/view/2679.