1. D.P. Kothari, I.J. Nagrath, Modern Power System Analysis. Tata McGraw-Hill Education (2003)
2. P. Kundur, Power System Stability and Control; 8th reprint. ed: New Delhi: Tata McGraw Hill (2008)
3. J. Machowski, Jan, Z. Lubosny, J.W. Bialek, J.R. Bumby, Power System Dynamics: Stability and Control. Wiley (2020)
4. Z.M. Al-Hamouz, Y.L. Abdel-Magid, Variable structure load frequency controllers for multi-area power systems. Int. J. Electr. Power Energy Syst. 15(5), 293–300 (1993)
5. S. Ramesh, A. Krishnan, Fuzzy rule based load frequency control in a parallel AC-DC interconnected power systems through HVDC link. Int. J. Comput. Appl. 1(4), 62–69 (2010)