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Beglaryan, H. A.; Melikyan, S. A.; Terzyan, A. M.; Isahakyan, A. R.; Zulumyan, N. H. . (2018). Preparation of Hydrated Strontium Silicates from Silica Hydrogel Isolated from Serpentines and Their Thermal Transformations. Russian Journal of Inorganic Chemistry, 63(11), 1395–1402. doi:10.1134/S0036023618110025 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research