Surbakti, Sinarta Putra P., and Nurhidayati. “Economic Impact of Coal Mining Investment in East Kalimantan: An Input Output Approach ”. Indonesian Treasury Review: Jurnal Perbendaharaan, Keuangan Negara Dan Kebijakan Publik, vol. 10, no. 3, Sept. 2025, pp. 272-84, doi:10.33105/itrev.v10i3.1229.