1. “Notice of Proposed Standard for Sulfur Oxide, Particulate Matter, Carbon Monoxide, Photochemical Oxidants, Hydrocarbons, and Nitrogen Oxides,”;Federal Register 36,1971
2. Regional Air Pollution Study Effects of Airborne Sulfur Pollutants on Materials;Mansfield,1980
3. Effects of Atmospheric Sulfur Dioxide on the Corrosion of Zinc;Haynie;Mater. Perform.,1970