Firdaus, Lazuardi. “Barriers to Integration in the Global Natural Gas Market: Insights from Regional Price Trends and Volatility Analysis”. Catalyx : Journal of Process Chemistry and Technology 2, no. 4 (October 30, 2025): 233–246. Accessed September 9, 2026. https://journal.idscipub.com/index.php/catalyx/article/view/1326.