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xin, Zhou; Jun, Sun; Yan, Tian; Bing, Lu; Yingying, Hang; Quansheng, Chen . (2020). Hyperspectral technique combined with deep learning algorithm for detection of compound heavy metals in lettuce. Food Chemistry, (), 126503–. doi:10.1016/j.foodchem.2020.126503 
10.1016/j.foodchem.2020.126503