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Chen, Siyu; Yang, Yuxiao; Li, Wenjun; Song, Yiju; Shi, Lei; Hong, Chenglin . (2020). A sandwich-type electrochemical immunosensor using Ag@CeO2-Au as a lable for sensitive detection of carcinoembryonic antigen. Microchemical Journal, 159(), 105415–. doi:10.1016/j.microc.2020.105415 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research