1. Darby, S., Whitley, E., Silcocks, P., Thakrar, B., Green, M., Lomas, P., Miles, J., Reeves, G., Fearn, T. and Doll, R. (1998) Risk of lung cancer associated with residential radon exposure in south-west England: a case-control study. Br. J. Cancer, 78, 394–408.
2. Laurance, J. Radon threat worse than Sellafield radiation. The Independent, 19 May 1998 (London) p. 9 (1998).
3. Kendall, G., Miles, J., Cliff, K., Green, B., Muirhead, C., Dixon, D., Lomas, P. and Goodridge, S. Exposure to radon in UK dwellings. NRPB Report R272 (Chilton: National Radiological Protection Board) (1994).
4. Lomas, P., Green, B., Miles, J. and Kendall, G. Radon atlas of England. NRPB Report R290 (Chilton: National Radiological Protection Board) (1996).
5. Bradley, E. J., Lomas, P., Green, B. and Smithard, J. Radon in dwellings in England: 1997 Review. NRPB Report R293 (Chilton: National Radiological Protection Board) (1997).