Xuan, Dao Mai, Nhung Tran Thi Lan, and Trinh Ho Thuy. “Nexus of Trade, FDI, Green Energy, Green Tax and Environmental Quality in Vietnam: A Time Varying Granger Causality”. International Journal of Energy Economics and Policy 15, no. 5 (August 20, 2025): 83–95. Accessed December 5, 2025. https://econjournals.com/index.php/ijeep/article/view/20343.