1. Statistical Analysis: A Computer Oriented Approach;Afifi,1972
2. An Introduction to Multivariate Statistical Analysis;Anderson,1958
3. Ongoing research on ultraviolet radiation, air pollution, and skin cancer mortality;Baker-Blocker,1979
4. Carcinogenesis by Ultraviolet Light;Blum,1959
5. On the Linkage of Solar Ultraviolet Light to Skin Cancer;Cutchis,1978