1. Introduction of skin tumors in hairless mice by a single exposure to UV radiation;Hsu;Photochem. Photobiol.,1975
2. Long-Term Field Measurements of Erythemally Effective Natural Ultraviolet Radiation in The Biologic Effects of Ultraviolet Radiation;Robertson,1969
3. Solar Ultraviolet Radiation in Relation to Human Sunburn and Skin Cancer;Robertson,1972
4. Measurements of Ultraviolet Radiation in the United States and Comparisons with Skin Cancer Data;Scotto,1975