TY  - RPRT
TI  - Surface phenology and satellite sensor-derived onset of greenness: An initial comparison
AU  - Mark D. Schwartz
AU  - Bradley C. Reed
PY  - 2010
DO  - 10.1080/014311699211499
UR  - https://pubs.usgs.gov/publication/70187673
ID  - 70187673
ER  -