Donald L. Stanfield Morimoto, S., McClure, W. F., Crowell, B., & Stanfield, D. L. (2003). Near infrared technology for precision environmental measurements: Part 2. Determination of carbon in green grass tissue. JOURNAL OF NEAR INFRARED SPECTROSCOPY, 11(4), 257–267. https://doi.org/10.1255/jnirs.372 McClure, W. F., Moody, D., Stanfield, D. L., & Kinoshita, O. (2002). Hand-held NIR spectrometry. Part II: An economical no-moving parts spectrometer for measuring chlorophyll and moisture. APPLIED SPECTROSCOPY, 56(6), 720–724. https://doi.org/10.1366/000370202760077432 McClure, W. F., Crowell, B., Stanfield, D. L., Mohapatra, S., Morimoto, S., & Batten, G. (2002). Near infrared technology for precision environmental measurements: part 1. Determination of nitrogen in green- and dry-grass tissue. JOURNAL OF NEAR INFRARED SPECTROSCOPY, 10(3), 177–185. https://doi.org/10.1255/jnirs.333 Morimoto, S., McClure, W. F., & Stanfield, D. L. (2001). Hand-held NIR spectrometry: Part I: An instrument based upon gap-second derivative theory. APPLIED SPECTROSCOPY, 55(2), 182–189. https://doi.org/10.1366/0003702011951489