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Zhang, Haixia; Yu, Kuangshi; Zhu, Zhiping . (2018). Steam gasification reactivity of a high-sodium coal fly ash obtained from a pilot scale CFB gasifier. International Journal of Coal Science & Technology, (), –. doi:10.1007/s40789-018-0192-7 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research