Pohan, Choirul Rohmiyanti, dkk. “The Paradox of Mineral Downstreaming: An Economic Analysis of Mining Regulatory Disharmony in Indonesia”. SIGn Jurnal Hukum, vol. 7, no. 1, September 2025, hlm. 519-43, https://doi.org/10.37276/sjh.v7i1.465.