?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=J&rft.au=Xiong%2C+J&rft.aulast=Xiong&rft.date=November+2017&rft.title=An+Automated+Crop+Intensity+Algorithm+(ACIA)+for+global+cropland+intensity+mapping+at+30-m+using+multi-source+time-series+data+and+Google+Earth+Engine&rft.genre=proceeding