1. “Population Resources and the Environment.”;Ehrlich,1970
2. Ehrlich, P.R., and Holdren, J.P. (1971). Saturday Review, April 3.
3. “Nuclear Energy and the Environment.”;Weinberg;Bull. At. Sci.,1970
4. also Weinberg, A.M., and Hammond, R.P. (1970). American Scientist Vol. 58, p. 419.
5. “New Energy Technology.”;Hottel,1971