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Zhao, Leyi; Dvorak, D.J.; Obrovac, M.N. . (2016). Layered amorphous silicon as negative electrodes in lithium-ion batteries. Journal of Power Sources, 332(), 290–298. doi:10.1016/j.jpowsour.2016.09.124 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research