D. M.  Stoms and Estes, J. E., ?A remote sensing research agenda for mapping and monitoring biodiversity?, International Journal of Remote Sensing, vol. 14, pp. 1839-1860, 1993.

R. E.  Walker, Stoms, D. M., Estes, J. E., and Cayocca, K. D., ?Relationships between biological diversity and multitemporal vegetation index data in California?, in 1992 Annual Meeting of ASPRS/ACSM, Albuquerque, 1992, pp. 562-571.

J. L.  Star, Estes, J. E., and Davis, F., ?Improved Integration of Remote-Sensing and Geographic Information Systems - a Background to NCGIA Initiative 12?, Photogrammetric Engineering and Remote Sensing, vol. 57, pp. 643-645, 1991.

J. M.  Scott, Estes, J. E., Scepan, J., Davis, F. W., and Stoms, D. M., ?An information systems approach to the preservation of biological diversity?, in GIS Applications in Natural Resources, M.  Heit and Shortreid, A., Eds. Ft. Collins, Colorado: GIS World, Inc., 1991, pp. 283-293.

J. M.  Scott, Estes, J. E., Scepan, J., Davis, F. W., and Stoms, D. M., ?An information systems approach to the preservation of biological diversity?, in GIS Applications in Natural Resources, M.  Heit and Shortreid, A., Eds. Ft. Collins, Colorado: GIS World, Inc., 1991, pp. 283-293.

F. W.  Davis, Stoms, D. M., Estes, J. E., Scepan, J., and Scott, J. M., ?An information systems approach to the preservation of biological diversity?, International Journal of Geographical Information Systems, vol. 4, pp. 55-78, 1990.