?url_ver=Z39.88-2004&rft_id=10.3390%2Frs9101065&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=J&rft.au=Xiong%2C+J&rft.aulast=Xiong&rft.atitle=Nominal+30-m+Cropland+Extent+Map+of+Continental+Africa+by+Integrating+Pixel-Based+and+Object-Based+Algorithms+Using+Sentinel-2+and+Landsat-8+Data+on+Google+Earth+Engine&rft.title=Remote+Sensing&rft.issn=2072-4292&rft.date=19+October+2017&rft.volume=9(10)&rft.pages=1-27&rft.issue=1065&rft.genre=article