1. Ahtiainen, H., L. Hasselström, J. Artell, D. Angeli, M. Czajkowski, J. Meyerhoff, M. Alemu, K. Dahlbo, et al. 2012. Benefits of meeting the Baltic Sea nutrient reduction targets—Combining ecological modeling and contingent valuation in the nine littoral countries. MTT Discussion Papers 1. http://www.mtt.fi/dp/DP2012_1.pdf .
2. Darst, R.G. 2001. Smokestack diplomacy. Cooperation and conflict in East—West environmental politics. Cambridge: The MIT Press.
3. Dmochowska, B., and A. Szaniawska. 2011. Poland—Looking for a higher environmental awareness. In Governing the blue-green Baltic Sea, ed. M. Pihlajamäki and N. Tynkkynen, 66–77. Helsinki: Finnish Institute of International Affairs.
4. Flash Eurobarometer on Water. 2009. No 261. Available from http://ec.europa.eu/public_opinion/flash/fl_261_en.pdf .
5. Gänzle, S. 2011. Introduction: Transnational governance and policy-making in the Baltic Sea region. Journal of Baltic Studies 42: 1–7. doi: 10.1080/01629778.2011.538509 .