Unscear1982. Ionising radiation; sources and biological effects. 1982 Report to the General Assembly, United Nations, New York .
2.
O'Riordan, M.C. (1980). A review of indoor exposure from natural radiation In Proceedings of a seminar on the radiological Burden of Man from Natural Radioactivity in the Countries of the European Communities, EEC, Luxembourg .
3.
Harley, N.H., 1984. Radon and lung cancer in mines and homesNew England Journal of Medicine , Vol. 310, No. 23, 1525-1257.
4.
Hanson, G.P., 1984 in Health Effects of Low-level Radiation Ed. Hendee, W. R. Appleton-Century-Croft , Norwalk.
5.
O'Riordan, M.C., James, A.C., Rae , S. and Wrixon, A.D., 1983. Human Exposure to Radon Decay Products Inside Dwellings in the United KingdomNational Radiological Protection Board , Didcot.
6.
Durrance, E.M. and Heath, M.J., 1985. Thermal groundwater movement and radionuclide transport in SW England. Mineralogical Magazine, April 1985, Vol. 49, 289-299.
7.
Heath, M.J., 1982. Uranium in the Dartmoor granite: Geochemical and Radiogeological investigations in relation to the South West England Geothermal Anomaly. Ph.D. Thesis, University of Exeter.
8.
8 Heath, M.J., 1985. Geological control of fracture permeability in the Carnmenellis granite, Cornwall: implications for radionuclide migrationMineralogical Magazine, April, Vol. 49, 233-244.
9.
Royal Commission on Environmental Pollution.1984. Tackling Pollution-Experience and Prospects Tenth Report. Cmnd. 9149. HMSO. London .
10.
Osmond, J.K., 1964. The Distribution of the Heavy Radio-elements in the Rocks and Waters of Florida in The Natural Radiation EnvironmentUniversity of Chicago , Chicago.