A comparison of methods to relate grass reflectance to soil metal contamination - Kooistra, L.; Leuven, R. S. E. W.; Wehrens, R.; Nienhuis, P. H.; Buydens, L. M. C. (International Journal of Remote Sensing, 2003)

An investigation into robust spectral indices for leaf chlorophyll estimation - Main, Russell; Cho, Moses Azong; Mathieu, Renaud; OâKennedy, Martha M.; Ramoelo, Abel; Koch, Susan (ISPRS Journal of Photogrammetry and Remote Sensing, 2011)

Relationships between leaf pigment content and spectral reflectance across a wide range of species, leaf structures and developmental stages - Sims, Daniel A.; Gamon, John A. (Remote Sensing of Environment, 2002)

The IndexDatabase - Henrich, V.; Krauss, G.; Götze, C.; Sandow, C. (2011)