1. “Reaching a CO2-emission limitation agreement for the community: implication for equity and cost-effectiveness”;Barrett;European Economy,1992
2. Trends '91: A Compendium of Data on Global Change;CDIAC,1992
3. Colombo, U., and Bernardini, O., 1978. A Low Energy Growth: 2030 Scenario and the Perspectives for Western Europe, Report prepared for the Commission of the European Community.
4. Analysis of Carbon Reduction in New York State;Cotter,1991
5. “Offsetting new CO2 emissions: a rational first greenhouse policy step”;Dudec;Contemporary Policy Issues,1990