1. Empirical evidence of advances in scrubber technology
2. & (1991). Clean air handbook. Rockville, MD: Government Institutes, Inc.
3. (2000). Innovation under the tradable sulfur dioxide emission permits program in the U.S. electricity sector, Discussion Paper 00-38. Resources for the Future, Washington, DC.
4. Sulfur Dioxide Control by Electric Utilities: What Are the Gains from Trade?
5. & (1997). Emissions trading under the U.S. acid rain program: evaluation of the compliace costs and allowance market performance. Cambridge, MA: MIT Center for Energy and Environmental Policy Research.