A. Susmanto, A. Hidayatno, A. D. Setiawan, and D. R. C. Pratama, “Assessing the Impact of Fiscal Incentives on the Investment Feasibility of Geothermal Projects in Indonesia: A Value-at-Risk approach”, IJEEP, vol. 16, no. 2, pp. 788–808, Feb. 2026.