"Grandfathering of allowances as an allocation mechanism for U.S. greenhouse gas emissions trading system", draft report with Tim Hargrave, Center For Clean Air Policy, March, 1998.
"A US Carbon Emissions Trading System: Some Options that Include Downstream Sources" with David Festa, prepared for the Center for Clean Air Policy, April 1998.
"Issues Related to Including Biotic Offsets in a GHG Emissions Trading System" proceedings of the IEA Task XV Bioenergy workshop, Rotorua New Zealand, March 1998.
"Issues Related to Quantification of Carbon Benefits from Sequestration Projects in Australia" with Martin Andrew, Neil Bird and Sid Embree for the Australian Greenhouse Challenge Office, Sept. 1997
"An Emerging Host Country Joint Implementation Regime: The Case of Costa Rica," part of a report by ECON Consulting for the World Bank, March 1997, 21 pages.
"The Potential for Joint Implementation: Theoretical Considerations and Perspectives from the Industrial and Land Use Sectors," with Paul Parks, a report by ECON Consulting for the World Bank, March 1997.
"Joint Implementation in Russia: Lessons from Demonstration Projects," with Dr. Steven Hamburg, Dr. Alexander Golub et al. 104 pages, July 1996
"Identification and Pre-feasibility Evaluation of Potential Joint Implementation Demonstration Projects in Costa Rica," Prepared for UNCTAD. December 30, 1994, 50 pp.
"Joint Implementation: Sustainable Development through Trade in Environmental Commodities", (with others at EDF) paper distributed at the Ninth Intergovernmental Negotiating Committee for a Framework Convention on Climate Change, Geneva, Switzerland, Environmental Defense Fund, August 1993, 24 pp.
"Preserving Tropical Forests and Climate: The Role of Trees in Greenhouse Gas Emissions Trading", with Daniel Dudek, paper presented at the UNCTAD Workshop on Sustainable Development, Rio de Janeiro, June 10, 1992, 40 pp.
"Preserving Tropical Forests Through Emissions Trading", Forum, Oak Ridge National Laboratory and University of Tennessee, Knoxville, fall, 1992, 6 pp. (with Daniel J. Dudek).
"Treatment of Externalities in Utility Least Cost Planning", July, 1992 (with Robert Nordhaus).
"Joint Implementation and the Development of an Emissions Trading System for Greenhouse Gases", paper distributed to the Fourth Intergovernmental Negotiating Committee for a Framework Convention on Climate Change, Geneva, Switzerland, December, 1991, 11 pp.
"Offsetting New CO2 Emissions: A Rational First Greenhouse Policy Step", Contemporary Policy Issues, Western Economic Association International, Long Beach, California, July 1990 (with Daniel J. Dudek).
"SO2 and CO2: Consistent Policymaking in a Greenhouse", Environmental Defense Fund, New York, New York, January 1990, 31 pp. (with Daniel J. Dudek and Peter Miller).
"Business Response to Environmental Policy: Lessons from CFC Regulation " Business, Ethics and the Environment: The Public Policy Debate, Quorum Books/Greenwood Press, Westport, CT, pp. 35-60, 1990 (with Daniel J. Dudek and Kenneth Sewall).
"Long-term Strategy on the Environment", House Ways and Means Committee, March 6, 1990, 10 pp. (with Daniel J. Dudek and John Ruston).