@proceedings{ jacobsen1995, author = {Jacobsen, Anne and Broge, Niels H. and Hansen, Birger U.}, title = {Monitoring wheat fields and grasslands using spectral reflectance data}, journal = {International Symposium on Spectral Sensing Research (ISSSR)}, publisher = {}, address = {Melbourne, Australia}, pages = {}, volume = {}, number = {}, year = {1995} } @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} }