Azman Aziz, Mukhriz Izraf, and Jauhari Dahalan. 2015. “The Impacts of Oil Price Fluctuations on Revealed Comparative Advantage of Manufacturing Commodities for ASEAN-5 Economies”. International Journal of Energy Economics and Policy 5 (4):1098-1108. https://econjournals.com.tr/index.php/ijeep/article/view/1461.