1. Ager-Hanssen 1990 ‘The Long-Term Outlook for Energy’
2. Anderson , D. 1990a ‘Carbon, Emissions and Carbon Fixing from an Economic Perspective’
3. Anderson , D. 1990b ‘Economics of Energy and the Environment - a Discussion of Issues’
4. Anderson , D. Bird , C. D. 1990 ‘The Carbon Accumulations Problem and Technical Progress’
5. Barbier , E. B. Burgess , J. C. Pearce , D. W. 1990 ‘Slowing Global Warming: Options for Greenhouse Gas Substitution’