1. United Nations, Kyoto protocol, 1997.
2. United Nations Treatie, Paris agreement, No 54113, 2015.
3. IEA, Co-generation and Renewables. Solutions for a low-carbon energy future. https://wwwieaorg/publications/freepublications/publication/co-generation-and-renewables-solutions-for-a-low-carbon-energy-futurehtml. 2011.
4. IEA, World Energy Outlook 2017. 2017.
5. Heat storage materials, geometry and applications: a review;Dinker;J Energy Inst,2015