Abd Khalid, Saifulnizam, et al. “Optimal Sitting and Sizing of Distributed Generators Using Pareto-Based Multi-Objective Particle Swarm Optimization for Improving Power System Operation”. ELEKTRIKA- Journal of Electrical Engineering, vol. 21, no. 1, Apr. 2022, pp. 35-41, doi:10.11113/elektrika.v21n1.346.