Merghadi, F., and A. Aliouche. “A RELATED FIXED POINT THEOREM IN $n$ COMPLETE FUZZY METRIC SPACES”. Journal of Nonlinear Analysis and Optimization: Theory & Applications, vol. 3, no. 2, Sept. 2012, pp. 293-02, http://www.math.sci.nu.ac.th/ojs302/index.php/jnao/article/view/150.