TY  - RPRT
TI  - A five-year analysis of MODIS NDVI and NDWI for grassland drought assessment over the central Great Plains of the United States
AU  - Yingxin Gu
AU  - Jesslyn F. Brown
AU  - J. P. Verdin
AU  - B. Wardlow
PY  - 2007
DO  - 10.1029/2006gl029127
UR  - https://pubs.usgs.gov/publication/70030166
ID  - 70030166
ER  -