A. Amarendra, Dr. L. Ravi Srinivas, Dr. R. Srinivasa Rao. “An ITSA Methodology Based Power System Security Improvement With Unified Power Flow Controller under Contingency Rules ”. Design Engineering, no. 1, Jan. 2022, pp. 782-95, http://thedesignengineering.com/index.php/DE/article/view/8854.