1. Testing a von Liebig crop response function against polynomial specifications;Ackello-Ogutu;Am. J. Agric. Econ.,1985
2. Response functions and the value of soil test information: the case of sugar beets;Adams;North Central J. Agric. Econ.,1983
3. Akridge, L.D., Whipker, J.T., 2007. Precision Agricultural Services Dealership Survey Results. Staff Paper 07-13. Center for Agricultural Business. Purdue Univ., West Lafayette, IN.
4. Economics of fertility management in cotton production in the United States;Bazen;Dynam. Soil Dynam. Plant,2007
5. Dynamic Programming;Bellman,1957