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Boniface P. T. Fokwa. (2009). Valence-Electron-Driven Ru/Ti Site Preference in the New Ternary Boride Ti10Ru19B8: Synthesis and Single-Crystal Structure Refinement. , 635(13-14), 2258–2262. doi:10.1002/zaac.200900192 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research