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Kim, Ji Yeon; Han, Suyoung; Bang, Jin Ho . (2016). Cobalt disulfide nano-pine-tree array as a platinum alternative electrocatalyst for hydrogen evolution reaction. Materials Letters, (), S0167577X1631833X–. doi:10.1016/j.matlet.2016.11.080 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research