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Azat, S.; Korobeinyk, A.V.; Moustakas, K.; Inglezakis, V.J. . (2019). Sustainable production of pure silica from rice husk waste in Kazakhstan. Journal of Cleaner Production, (), S0959652619301593–. doi:10.1016/j.jclepro.2019.01.142 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research