Dynamics of the relationship between NDVI and SWIR32 vegetation indices in southern Africa: implications for retrieval of fractional cover from MODIS data MJ Hill, Q Zhou, Q Sun, CB Schaaf, J Southworth, NB Mishra, C Gibbes, ... International Journal of Remote Sensing 37 (6), 1476-1503, 2016 | 21 | 2016 |