1. Main journals are shown on http://www.scimagojr.com/journalrank.php?category=2105. Renewable and Sustainable Energy Review, Energy Economics, Applied Energy, Energy Policy, Energy, Energy Journal, Energy strategy Reviews, Renewable energy, Journal of Cleaner Production, Energy for Sustainable Development, Environmental Innovation and Societal Transformation, Energy System, International Journal of Sustainable Energy, Energy Studies Review, Energy Research and Social Science, Journal of Cleaner Production.
2. IEA, http://www.iea.org/newsroom/news/2016/november/world-energy-outlook-2016.html (accessed 14.06.17).
3. BP http://www.bp.com/en/global/corporate/energy-economics/statistical-review-of-world-energy.html (accessed 14.06.17).
4. Bloomberg New Energy, https://www.bloomberg.com/company/new-energy-outlook/ (accessed 14.06.17).
5. IRENA, http://www.irena.org/menu/index.aspx?CatID=141&PriMenuID=36&SubcatID=2729&mnu=Subcat (accessed 14.06.17).