Mapping Winter Wheat with Combinations of Temporally Aggregated Sentinel-2 and Landsat-8 Data in Shandong Province, China. - Feng Xu; Zhaofu Li; Shuyu Zhang; Naitao Huang; Zongyao Quan; Wenmin Zhang; Xiaojun Liu 003; Xiaosan Jiang; Jianjun Pan; Alexander V. Prishchepov (Remote. Sens., 2020)