1. Bhattacharyya, A. (1943). On a measure of divergence between two statistical populations defined by probability distributions. Bulletin of the Calcutta Mathematical Society, 35, 99–109.
2. Boardman, J. W. (1993). Automating spectral unmixing of AVIRIS data using convex geometry concepts (vol. 1). In Summaries 4th Annual JPL Airborne Geoscience Workshop, pp. 11–14.
3. California Department of Food and Agriculture and the USDA. (2012). Citrus Disease Huanglongbing Detected in Hacienda Heights Area of Los Angeles County. Available: http://weblogs.nal.usda.gov/invasivespecies/archives/2012/04/citrus_greening.shtml . Retrieved March 21, 2013.
4. Cho, M. A., & Skidmore, A. K. (2006). A new technique for extracting the red edge position from hyperspectral data: The linear extrapolation method. Remote Sensing of Environment, 101(2), 181–193.
5. Chung, K. R., & Brlansky, R. H. (2005). Citrus diseases exotic to Florida: Huanglongbing (citrus greening) (p. 210). Gainesville: IFAS Extension Publication, University of Florida.