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2. U.S. Bureau of Mines. Industry Surveys–Mercury 1994. U.S. Department of the Interior, Washington, DC 1995.
3. U.S. EPA. “Mercury Usage and Alternatives in the Electrical and Electronics Industries”. Office of Research and Development, Risk Reduction Engineering Laboratory, Cincinnati, OH. EPA/600/R-94/047, January 1994.
4. National Electrical Manufacturers Associations (NEMA). “The Management of Spent Electric Lamps Containing Mercury”. September 1994.
5. National Electrical Manufacturers Associations (NEMA). “Environmental Risk Analysis: Spent Mercury-Containing Lamps”. February 1995.