1. NATO AS1 Seri;Armstrong,1993
2. and , Principles of exposure measurement in epidemiology. Oxford Medical Publications. Oxford (1992).
3. Australian Bureau Ok Meteorology, Climatic atlas of Australia. map set 2, Melbourne (1988).
4. Risk of skin cancer in renal transplant patients. IGC. Dordrecht (1992).
5. IARC Publicat;Breslow,1980