A. R.  Kiester, White, D., Preston, E. M., Master, L. L., Loveland, T. R., Bradford, D. F., Csuti, B. A., O'Connor, R. J., Davis, F. W., and Stoms, D. M., ?Research Plan for Pilot Studies of the Biodiversity Research Consortium?. U. S. Environmental Protection Agency, 1993.