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Burstedde, C.; Stadler, G.; Alisic, L.; Wilcox, L. C.; Tan, E.; Gurnis, M.; Ghattas, O. . (2013). Large-scale adaptive mantle convection simulation. Geophysical Journal International, 192(3), 889–906. doi:10.1093/gji/ggs070 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research