1. Gibbons, J. H., Our Changing Planet. Subcommittee on Global Change Research, Committee on Environmental and Natural Resources Research of the National Science and Technology Council, Coordination Office of the U.S. Global Change and Research Program, 300 D Street, S.W. Washington, DC 20024, 1995
2. Sagar, A. D., Automobiles and Global Warming: Alternative Fuels and Other Options for Carbon Dioxide Emissions Reduction. Environmental Impact Assessment Review, Vol. 15. Elsevier Publishing, 1995, pp. 241–274
3. Stephens, W. K., Emissions must be cut to avert shift in climate, panel says. In Themes of the Times, a contemporary view of selected subjects from the pages of The New York Times, Prentice–Hall, New York, NY, Spring, 1994, p. 4
4. Gust, D., Why Study Photosynthesis? ASU Photosynthesis Center, World Wide Web information page, 1995
5. Thomas, P., Canola Growers Manual. Canola Council of Canada, Winnipeg, 1984, pp. 101–102