1. Energy in the Long Term, Energy Policy March;Bourrelier,1992
2. Gesundheitsrisken von Energiersorgungs systemen;Fritsche,1988
3. Research on the Feasibility of CO2 Global Recycle Systems using Renewable Energy;NEDO,1993
4. Research for making the Implementing Program of the Earth Revival Plan;NEDO,1996
5. Global Warming-Economic Dimensions and Policy Responses;OECD,1995