1. APEC Energy Demand and Supply Outlook 2006 Projections to 2030. (2006). Asia Pacific Energy Research Center. Japan: Published by the Asia Pacific Energy Research Centre, Institute of Energy Economics.
2. Arctic Center. (2011). Oil and gas reserves in North West Russia. Retrieved from Arctic Center website: http://arcticcentre.ulapland.fi/barentsinfo/economic/02/03.html .
3. Binig, A.-V., Mirela S., & Manuela, S. (11 September, 2000). About the relationship liberalization-privatization in a power and heat sector in transition. FOREN 2000—Regional Energy Forum—Neptun, Romania.
4. Bilbao, J., Bravo, E., Garcia, O., Varela, C., Rodriguez, M., & Gonzalez, P. (2011). Electric system in Spain: Generation capacity, electricity production and market shares. International Journal on Technical and Physical Problems of Engineering (IJTPE), 3(9), 4 (Applied Mathematics Department, University of the Basque Country; Bilbao, Spain). Published by International Organization on TPE (IOTPE). ISSN 2077-3528.
5. COM. (2008). 782, EC; Brussels 13.11, 2008 SEC (2008) 2869.