1. Serafino G. and Frederick J. Global modeling ofthe ultraviolet solar flux incident on the biosphere. In: Assessing the Risks ofTrace Gases That Can Modify the Statosphere. EPA 400/1-87/001H. Government Printing Office Washington DC 1987 Appendix H.
2. Melanoma mortality and exposure to ultraviolet radiation: An empirical relationship
3. U.S. Environmental Protection Agency. Assessing the Risks ofTrace Gases That Can Modify the Stratosphere. EPA 400/1-87/OOIA-H. Government Printing Office Washington DC 1987.
4. Scotto J. Fears T. R. and Fraumeni J. F. Jr. Incidence of Non-melanoma Skin Cancer in the United States. (NIH) 82-2433. National Cancer Institute U.S. Department of Health and Human Services Washington DC 1981.
5. The Emerging Epidemic of Melanoma and Squamous Cell Skin Cancer