1. THE MIDDLE ULTRAVIOLET REACHING THE GROUND
2. Solar ultraviolet radiation and the growth and development of higher plants;Caldwell,1971
3. Bener, P. 1972. Technical Report, U.S. Army, London, Contract No. DAJA 37–68-C-1017.
4. Studies on ultraviolet radiation action upon animal cells;Giese;Photophysiology,1964
5. Impacts of Climatic Change on the Biosphere: Part 1 Ultraviolet Radiation Effects;Nachtwey,1975