1. The sootfall of London: its amount, quality, and effects;Anonymous;Lancet,1912
2. The Big Smoke: A History of Air Pollution in London since Medieval Times;Brimblecombe,1987
3. US and international approaches to establishing air standards and guidelines;Grant,1999
4. Holgate, S., 1998. Quantification of the effects of air pollution on health in the United Kingdom. The Stationery Office, London, p. 77
5. Air Pollution and Health,1999