1. Appleby, P. G. & F. Oldfield, 1978. The calculation of 210Pb dates assuming a constant rate of supply of unsupported 210Pb to the sediment. Catena 5: 1?8.
2. Appleby, P. G., P. Nolan, D. W. Gifford, M. J. Godfrey, F. Oldfield, N. J. Anderson & R. W. Battarbee, 1986. 210Pb dating by low background gamma counting. Hydrobiologia 143: 21?27.
3. Bonnett, P. J. P. & R. S. Cambray, 1989. The chronology of deposition of radionuclides as recorded in the sediments of Ponsonby Tarn, Cumbria. Paper presented at the Vth International Symposium on Palaeolimnology, Ambleside, Cumbria, September 1989.
4. Bonnett, P. J. P., G. J. L. Leeks & R. S. Cambray, 1989. Transport processes for Chernobyl-labelled sediments: preliminary evidence from upland mid-Wales. Land Degradation and Rehabilitation 1: 39?50.
5. Cambray, R. S., P. A. Cawse, J. A. Garland, J. A. B. Gibson, P. Johnson, G. N. J. Lewis, D. Newton, L. Salmon & B. O. Wade, 1987. Observations on radioactivity from the Chernobyl accident. Nucl. Energy 26: 77?101.