A. Hornung

Comparison of Site-Specific Management Zones: Soil-Color-Based and Yield-Based

D. G. Westfall, Daniel Inman, Robin M. Reich, 2006 .

A synthesis of multi-disciplinary research in precision agriculture: site-specific management zones in the semi-arid western Great Plains of the USA

B. Koch, M. Frasier, M. Mzuku, 2008, Precision Agriculture.

Evaluation of site-specific management zones: grain yield and nitrogen use efficiency.

D. G. Westfall, J. V. Stafford, Robin M. Reich, 2003 .