@article{Mutanga2004,
author = {Mutanga, O. and Skidmore, A.K.},
title= {Narrow band vegetation indices overcome the saturation problem in biomass estimation},
year = {2004},
doi = {10.1080/01431160310001654923},
journal = {International Journal of Remote Sensing},
volume = {25},
number = {19},
pages = {3999--4014},
}