1. Ultraviolet-radiation and skin cancer, effect of an ozone layer depletion;Hennksen;Photochem Photobiol,1990
2. Potential effects of altered solar ultraviolet radiation on human skin cancer;Urbach;Photochem Photobiol,1989
3. Operations handbook: ozone observations with Dobson spectrometer;Komhyr,1980
4. Zeigen die schweizenschen Messungen eine Gefahrdung der Ozon-Schicht?;Staehelin;Chimia,1989