J.  Kreitler, Stoms, D. M., and Davis, F. W., ?Optimization in the utility maximization framework for conservation planning: a comparison of solution procedures in a study of multifunctional agriculture?. 2014.

E. A.  Machado, Stoms, D. M., Davis, F. W., and Kreitler, J., ?Prioritizing farmland preservation cost-effectively for multiple objectives?, Journal of Soil and Water Conservation, vol. 61, pp. 250-258, 2006.