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Yamaki, Takahiro; Ukyo, Yoshio . (2019). Evaluation of coulombic efficiency of composite graphite anode by ultrahigh-precision charge/discharge system. Journal of Power Sources, 433(), 126677–. doi:10.1016/j.jpowsour.2019.05.083 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research