1. Mass rapid transit systems for cities in the developing world;Fouracre;Trans. Rev.,2003
2. G.F. Davies, G.G. Maidment, W. Dennis, A. Ajileye, Cooling and recovery of heat from underground railway tunnels for district heating, in: CIBSE ASHRAE Technical Symposium, Loughborough, UK, 2017, pp. 5-6 https://openresearch.lsbu.ac.uk/item/86zvy.
3. Ground source heat pumps and their interactions with underground railway tunnels in an urban environment - a review;Revesz;Appl. Therm. Eng.,2016
4. Heat recovery from air in underground transport tunnels;Ninikas;Renew. Energy,2016
5. H. Lagoeiro, D. Curry, J. Bielicki, A. Revesz, G. Davies, G. Maidment, Heat from Underground Energy London (Heat FUEL) CIBSE Technical Symposium, Sheffield, UK, 2019, pp. 25-26 https://openresearch.lsbu.ac.uk/item/865x3.