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Vezvaie, M.; Kalisvaart, P.; Fritzsche, H.; Tun, Z.; Mitlin, D. . (2014). The Penetration Depth of Chemical Reactions in a Thin-Film Co3O4 Supercapacitor Electrode. Journal of the Electrochemical Society, 161(5), A798–A802. doi:10.1149/2.081405jes 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research