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Wenjian Cheng; Jianchu Chen; Donghong Liu; Xingqian Ye; Fansheng Ke. (2010). Impact of ultrasonic treatment on properties of starch film-forming dispersion and the resulting films. , 81(3), 707–711. doi:10.1016/j.carbpol.2010.03.043 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research