@article{ kooistra2003, author = {Kooistra, L. and Leuven, R. S. E. W. and Wehrens, R. and Nienhuis, P. H. and Buydens, L. M. C.}, title = {A comparison of methods to relate grass reflectance to soil metal contamination}, journal = {International Journal of Remote Sensing}, publisher = {}, pages = {4995-5010}, volume = {24}, number = {24}, year = {2003} } @article{ main2011, author = {Main, Russell and Cho, Moses Azong and Mathieu, Renaud and O’Kennedy, Martha M. and Ramoelo, Abel and Koch, Susan}, title = {An investigation into robust spectral indices for leaf chlorophyll estimation}, journal = {ISPRS Journal of Photogrammetry and Remote Sensing}, publisher = {}, pages = {751-761}, volume = {66}, number = {6}, year = {2011} } @article{ sims2002, author = {Sims, Daniel A. and Gamon, John A.}, title = {Relationships between leaf pigment content and spectral reflectance across a wide range of species, leaf structures and developmental stages}, journal = {Remote Sensing of Environment}, publisher = {}, pages = {337-354}, volume = {81}, number = {2–3}, year = {2002} } @misc{ idb, author = {Henrich, V. and Krauss, G. and Götze, C. and Sandow, C.}, title = {The IndexDatabase}, publisher = {}, address = {Bonn}, pages = {}, volume = {}, number = {}, year = {2011} }