K, S. ., and V. . S. “Tuning of PID Controller Using Hybridized Modified Firefly-Chaos Algorithm in Industrialized Polymerization Reactors”. International Journal of Intelligent Systems and Applications in Engineering, vol. 10, no. 4, Dec. 2022, pp. 256-63, https://ijisae.org/index.php/IJISAE/article/view/2224.