Airborne multi-spectral monitoring of agricultural crop status: effect of time of year, crop type and crop condition parameter - Cloutis, E. A.; Connery, D. R.; Major, D. J.; Dover, F. J. (International Journal of Remote Sensing, 1996)

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