F. A. Zaini, M. Sulaima, I. A. W. A. Razak, and A. N. F Ali, “INVESTIGATION OF OPTIMAL OFF-PEAK TARIFF RIDER (OPTR) BY USING PARTICLE SWARM OPTIMIZATION FOR SELECTED COMMERCIAL AND INDUSTRIAL CONSUMERS IN MALAYSIA”, JET, vol. 14, no. 1, pp. 137–157, Jun. 2023.