1. Reduction of stratospheric ozone by nitrogen oxide catalysts from supersonic transport exhaust;Johnston;Science,1971
2. The same material in much fuller form;Johnston;Lawrence Radiation Laboratory Report UCRL-20568 TID-4500,1971
3. The middle ultraviolet reaching the ground;Green,1973
4. SSTs, ozone, and skin cancer;Johnson;Astronautics and Aeronautics,1973
5. Ultraviolet radiation of sunlight and skin cancer;Blum,1972