1. International energy outlook 2013;Sieminski,2013
2. Gastli A, Armendáriz JSM, Challenges facing grid integration of renewable energy in the GCC region, EU-GCC renewable energy policy experts’ workshop, an international meeting organized by the Gulf Research Center, EPU-NTUA and Masdar Institute on 24-27 November 2013 in Abu Dhabi, UAE, pp. 1-19.
3. IRENA 2012: IRENA handbook on renewable energy nationally appropriate mitigation actions (NAMAs) for policy makers and project developers, Abu Dhabi: International Renewable Energy Agency; 2012.
4. The importance of the legal and regulatory framework for the development of renewable energy, OSCE Organization for Security and Co-Operation in Europe – Office in Baku, September 2009.
5. EPA clean energy-environment guide to action, Chapter 5, Public benefits funds for state clean energy supply programs, 〈http://www.epa.gov/statelocalclimate/documents/pdf/guide_action_chap5_s2.pdf〉; 2006