Chandra Sahu, Prakash, and Ramesh Chandra Prusty. “Performance Enhancement in AGC of Multi-Area Power System With WOA Optimized Fo-2dof Controller and Facts Controllers”. International Journal of Engineering and Technology, vol. 7, no. 2.33, June 2018, pp. 562-7, https://doi.org/10.14419/ijet.v7i2.33.14835.