TY  - RPRT
TI  - Palmer Drought Severity Index as a Measure of Hydrologic Drought
AU  - William M. Alley
PY  - 2007
DO  - 10.1111/j.1752-1688.1985.tb05357.x
UR  - https://pubs.usgs.gov/publication/70012827
ID  - 70012827
ER  -