@article{ le_maire2004, author = {le Maire, G. and Francois, C. and Dufrene, E.}, title = {Towards universal broad leaf chlorophyll indices using PROSPECT simulated database and hyperspectral reflectance measurements}, journal = {Remote Sensing of Environment}, publisher = {}, pages = {1-28}, volume = {89}, number = {1}, year = {2004} } @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} }