Nooraini, E. et al. 2025. Mixed-Integer Linear Programming for Optimal Operation of Integrated Electricity and Natural Gas System Considering Take or Pay Agreements. JUTI: Jurnal Ilmiah Teknologi Informasi. 23, 2 (Jul. 2025), 32–47. DOI:https://doi.org/10.12962/j24068535.v23i2.a1265.