Al-Araji, A., and N. Yousif. “A Cognitive Hybrid Tuning Control Algorithm Design for Nonlinear Path-Tracking Controller for Wheeled Mobile Robot”. Al-Khwarizmi Engineering Journal, Vol. 13, no. 3, Sept. 2017, pp. 64-73, http://alkej.uobaghdad.edu.iq/index.php/alkej/article/view/360.