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Yashnik, Svetlana A.; Kuznetsov, Vadim V.; Ismagilov, Zinfer R. . (2018). Effect of χ-alumina addition on H 2 S oxidation properties of pure and modified γ-alumina. Chinese Journal of Catalysis, 39(2), 258–274. doi:10.1016/S1872-2067(18)63016-5 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research