Dinar, Zeineb Aloui. “Transboundary Pollution, R&D Spillovers, Absorptive Capacity and International Trade”. International Journal of Economics and Financial Issues 4, no. 3 (June 3, 2014): 501–513. Accessed May 2, 2024. https://www.econjournals.com/index.php/ijefi/article/view/813.