Lung and Asthma Information Agency. Factsheets (99/1 prevalence of asthma treated in general practice. 96/2 Trends in hospital admissions for asthma. 93/1 Trends in general practitioner prescribing of drugs for respiratory disease). 1999, 1996, 1993.
Department of Environment. Transport and the Regions (DETR). Air pollution health messages: perceptions among vulnerable groups. Report on qualitative research conducted by Hedges A. London: HMSO; 1999.
Moffat S. Dunn C. Public awareness of air quality and respiratory health and the impact of air quality advice. University of Newcastle. and University of Durham: 1999.
Health Education Authority. What people think about air pollution, their health in general and asthma in particular. London: Institute for Environment and Health: 1997.
National Foundation for Educational Research. Asthma and air quality: a survey of schools and young people. Report on research conducted by Kendall L. London: Institute of Environment and Health: 1997.
Department of Health. Respiratory symptoms and atopic conditions, in Health survey for England 1996. Report on research conducted by Primatesta P and Dong W (UK). HMSO; 1998.
An empirical approach for the prediction of annual mean nitrogen dioxide concentrations in London
Carslaw DC, Fuller GW, Beevers SD. An empirical approach for the prediction of annual mean nitrogen dioxide concentrations in London. Atmospheric Environ 2001;35:1501-1515.