Farouq Lutfy, Omar, and Ahmed Lateef Jassim. 2019. “Model Reference Adaptive Control Based on a Simplified Recurrent Neural Network Trained by Gbest-Guided Gravitational Search Algorithm to Control Nonlinear Systems”. American Scientific Research Journal for Engineering, Technology, and Sciences 51 (1):103-25. https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/4604.