Naikosou MF, Adityawarman A, Guterres MV, Mota TM, Samawi NV, Ariadji T, et al. Upstream Gas Portfolio Optimization under Fiscal Rules and Uncertainty: A Systematic Review and Bibliometric Mapping. IJEEP [Internet]. 2026 Jan. 30 [cited 2026 Apr. 4];16(2):914-2. Available from: https://econjournals.com/index.php/ijeep/article/view/22235