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He, Chen; Zhong, Heng; Zhang, Yiping; Li, Yuguo; Chung, Keng H.; Fang, Li; Zhang, Weilai; Wu, Baichun; Xu, Chunming; Shi, Quan . (2020). Organic matter in delayed coking wastewater: Molecular composition and its effect on emulsification. Fuel, 279(), 118432–. doi:10.1016/j.fuel.2020.118432 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research