Ulum, Akhmad Samsul, Abdul Rohman, Puji Harto, Dwi Ratmono, and Imam Ghozali. 2018. “The Role of Natural Resources on Moderating the Relationship Between Fiscal Decentralization and Corruption: Evidence from Indonesia”. International Journal of Energy Economics and Policy 9 (1):67-75. https://econjournals.com./index.php/ijeep/article/view/7252.