1. A comparison of ultraviolet radiation measured at an Arctic and an Alpine site;Ambach;Solar Energy,1991
2. Excessive sulfur dioxide emissions from Chilean volcanoes;Anders;J. Volcanol. Geotherm. Res.,1991
3. Burden of SO2 gas during the 1982 eruption of Galunggung (Indonesia);Badruddin,1987
4. The Eruption of Redoubt Volcano, Alaska, December 14, 1989–August 31, 1990,1990
5. SO2 emission rates at Mount St. Helens from March 29 through December, 1980;Casadevall,1981