RobertsC.A.WorkmanJ.ReevesJ.B.III, Near-Infrared Spectroscopy in Agriculture. The American Society of Agronomy, Inc., The Crop Science Society of America, Inc., The Soil Science Society of America, Inc. (2004).
LongD.S.EngelR.E., “Grain protein management using precision farming methods”, in Wheat Production and Marketing. Proceedings of the Wheat Protein Symposium, Saskatoon, Saskatchewan, Canada, March, 1998, Ed by FowlerD.B.GeddesW.E.JohnstonA.M.PrestonK.R., The University of Saskatchewan, Saskatoon, Saskatchewan, Canada (1998).