1. The Evening Standard. London Newspaper, 38°C on the buses; http://WWW.thisislondon.com [9/6/2004].
2. Thermal comfort: analysis and application in environmental engineering;Fanger,1970
3. The Evening Standard. London Newspaper, Overcrowding ‘in the mind’; http://www.thisislondon.com [23/1/2003].
4. London Underground Ltd. http://tube.tfl.gov.uk [visited on 29/7/2003].
5. AG Bendelius. Aerodynamic and thermodynamic evaluation for the Atlanta subway system . In: Proceedings of the 2nd international symposium on aerodynamics and ventilation of vehicle tunnels, C1; 1976. p. C1-1–20.