Sattich, Thomas. “Energy Imports, Geoeconomics, and Regional Coordination: The Case of Germany and Poland in the Baltic Energy System - Close Neighbours, Close(r) Cooperation?”. International Journal of Energy Economics and Policy 6, no. 4 (October 21, 2016): 789–800. Accessed April 29, 2024. https://www.econjournals.com/index.php/ijeep/article/view/3183.