1. Allee, W.C. 1931. Animal Aggregations. Chicago: University of Chicago Press.
2. Anderson, L.G. 1973. “Optimum Economic Yield of a Fishery Given a Variable Price of Output.” Journal of the Fisheries Research Board of Canada 30, 509–513.
3. Anderson, R.M. 1981. “Population Ecology of Infectious Disease Agents,” in Robert M. May, ed., Theoretical Ecology, 2nd Edition. Sunderland: Sinauer Associates, Inc., 318–355.
4. Arrow, Kenneth J. and Anthony C. Fisher. 1974. “Environmental Preservation, Uncertainty, and Irreversibility.” Quarterly Journal of Economics 88, 312–319.
5. Bachmura, Frank J. 1971. “The Economics of Vanishing Species.” Natural Resources Journal 11, 674–692.