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Weiss, Yaakov; McNeill, John; Pearson, D. Graham; Nowell, Geoff M.; Ottley, Chris J. . (2015). Highly saline fluids from a subducting slab as the source for fluid-rich diamonds. Nature, 524(7565), 339–342. doi:10.1038/nature14857 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research