1. Abrams, M. D. (1998). The red maple paradox. BioScience, 48, 355–364.
2. Alford, R. A., & Richards, S. J. (1999). Global amphibian declines: A problem in applied ecology. Annual Review of Ecology and Systematics, 30, 133–165.
3. Anspaugh, L. R., Catlin, R. J., & Goldman, M. (1988). The global impact of the Chernobyl reactor accident. Science, 242, 1513–1519.
4. Austin, P. (2005). Plum Creek’s big plan. Hallowell, ME: Maine Environmental Policy Institute.
5. Babbit, B. (2005). Cities in the wilderness: A new vision of land use in America. Washington, DC: Island Press/Shearwater Books.