Lenin, K., B. R. Reddy, and M. S. Kalavathi. “A New Charged System Search for Solving Optimal Reactive Power Dispatch Problem”. International Journal of Computer (IJC), vol. 14, no. 1, May 2014, pp. 22-40, https://ijcjournal.org/index.php/InternationalJournalOfComputer/article/view/311.