1. Near-infrared Technology in the Agricultural and Food Industries;Williams,2001
2. Near infrared spectroscopy: fundamentals, practical aspects and analytical applications;Pasquini;J. Braz. Chem. Soc.,2003
3. 204 years of near infrared technology: 1800-2003;McClure;J. Near Infrared Spectrosc.,2003
4. Near-infrared spectroscopy - its versatility in analytical chemistry;Ozaki;Anal. Sci.,2012
5. Herschel FW: Experiments on the Refrangibility of the Invisible Rays of the Sun, Philosophical Transactions of the Royal Academy 1800, 284–292. (This paper can also be found in: https://archive.org/stream/jstor-107057/107057#page/n1/mode/2up, consulted in 23/08/2017).