Maiden Application of Meta-Heuristic Techniques with Optimized Integral minus Tilt-Derivative Controller for AGC of Multi-area Multi-Source System. - Sanjeev Kumar Bhagat; Naladi Ram Babu; Lalit Chandra Sakia; Dhenuvakonda Koteswara Raju (EAI Endorsed Trans. Scalable Inf. Syst., 2020)