1. IPCC report, www.ipcc.ch/ipccreports/far/wg_I/ipcc_far_wg_I_full_report.pdf 1990.
2. The Kyoto protocol to the united nations framework convention on climate change;Breidenich;Am J Int Law,1998
3. Pichs-Madruga R, Sokona Y, Minx JC, Farahani E, Kadner S, Seyboth K, et al. reportClimate change 2014 mitigation of climate change summary for policymakers technical summary part of the working group III contribution to the fifth assessment report of the intergovernmental panel on climate change 2015.
4. 2020 climate & energy package | Climate Action 2007. https://ec.europa.eu/clima/policies/strategies/2020_en.
5. 2030 Energy Strategy - European Commission 2014. https://ec.europa.eu/energy/en/topics/energy-strategy-and-energy-union/2030-energy-strategy (accessed July 19, 2017).