@article{ malthus1993, author = {Malthus, Tim J. and Andrieu, Bruno and Danson, F. Mark and Jaggard, Keith W. and Steven, Michael D.}, title = {Candidate high spectral resolution infrared indices for crop cover}, journal = {Remote Sensing of Environment}, publisher = {}, pages = {204-212}, volume = {46}, number = {2}, year = {1993} } @article{ zarco-tejada2001, author = {Zarco-Tejada, P. J. and Miller, J. R. and Noland, T. L. and Mohammed, G. H. and Sampson, P. H. }, title = {Scaling-up and model inversion methods with narrow-band optical indices for chlorophyll content estimation in closed forest canopies with hyperspectral data}, journal = {IEEE Transactions on Geoscience and Remote Sensing}, publisher = {}, pages = {1491−1507}, volume = {39}, number = {}, year = {2001} } @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} }