Jiban Ballav Sahu,Byamakesh Nayak,Srikanta Kumar Dash. “Harmonic Elimination of Cascaded Multilevel Inverter With Non-Equal DC Sources Using Salp Swarm Algorithm”. International Journal of Advanced Science and Technology, Vol. 29, no. 9s, May 2020, pp. 5979-85, http://sersc.org/journals/index.php/IJAST/article/view/18793.