Deep, Kusum, Madhuri Arya, and Shashi Barak. 2010. “A New Multi-Swarm Particle Swarm Optimization and Its Application to Lennard-Jones Problem”. INFOCOMP Journal of Computer Science 9 (3):52-60. https://infocomp.dcc.ufla.br/index.php/infocomp/article/view/312.