1. World Business Council for Sustainable Development, in Millennium Ecosystem Assessment. 2005. Ecosystems and Human Well-being: Opportunities and Challenges. Island Press, Washington, DC, USA, p. 2, http://www.millenniumassessment.org/en/index.aspx.
2. Malley D.F., Martin P.D. and Ben-Dor E., in Near-Infrared Spectroscopy in Agriculture, Ed by Roberts C.A., Workman J.Jr, and Reeves J.B.III. Chapter 26, p. 729–784. Agronomy 44. American Society of Agronomy, Inc., Crop Science Society of America, Inc., Soil Science (2004).
3. Rapid Analysis of Hog Manure and Manure-amended Soils Using Near-infrared Spectroscopy
4. Li X. and Feng Y., Carbon Sequestration Potentials in Agricultural Soils. Alberta Research Council, 11 pp. (2002).
5. Compositional Analysis of Cattle Manure During Composting Using a Field‐Portable Near‐Infrared Spectrometer