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Blundell, Stephen J., and Katherine M. Blundell. Concepts in Thermal Physics. 2nd Revised edition, Oxford University Press, 2009.
Sørensen, Bent and ScienceDirect (Online service). Renewable Energy: Physics, Engineering, Environmental Impacts, Economics and Planning. Fifth edition, Academic Press is an imprint of Elsevier, 2017, http://ezproxy.library.qmul.ac.uk/login?url=http://www.sciencedirect.com/science/book/9780128045671.