1. IPCC, Climate Change 2014: Mitigation of Climate Change. Working Group III Contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (Cambridge University Press, Cambridge, UK and New York, USA, 2014).
2. REN21, Renewables 2016 Global Status Report (REN21 Secretariat, Paris, 2016).
3. L.R. Rudnick, Synthetics, Mineral Oils, and Bio-Based Lubricants: Chemistry and Technology, 2nd edn. (CRC Press, Boca Raton, 2013)
4. A.R. Lansdown, Lubrication and Lubricant Selection: A Practical Guide, 3rd edn. (ASME Press, Champaign, IL, 2004)
5. S. Wen, P. Huang, Principles of Tribology, 1st edn. (Wiley, Hoboken, NJ, 2012), pp. 177–196