Wan Abdul Razak, Intan Azmira, Nik Nur Atira Nik Ibrahim, Izham Zainal Abidin, Yap Keem Siah, Aidil Azwin Zainul Abidin, and Titik Khawa Abdul Rahman. “A Hybrid Method of Least Square Support Vector Machine and Bacterial Foraging Optimization Algorithm for Medium Term Electricity Price Forecasting”. International Journal of Integrated Engineering 11, no. 3 (September 3, 2019). Accessed August 4, 2021. https://publisher.uthm.edu.my/ojs/index.php/ijie/article/view/4689.