Rajesh Bera, Durbadal Mandal, Sakti Prasad Ghoshal, and Rajib Kar. “Optimal Design of Concentric Hexagonal Array Antenna Using Improved Particle Swarm Optimization Technique”. Journal of Network and Innovative Computing 3 (January 1, 2015): 10. Accessed April 29, 2026. https://cspub-jnic.org/index.php/jnic/article/view/62.