Maharani, Dewi Nadya, et al. “Pertamina’s Quasi-Monopoly : How Restrictions on Basic Fuel Imports Impact the Downstream Oil and Gas Investment ”. Journal of Law, Politic and Humanities, vol. 6, no. 2, Dec. 2025, pp. 1119-33, doi:10.38035/jlph.v6i2.2726.