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Kirihara, Masayuki; Asai, Yasutaka; Ogawa, Shiho; Noguchi, Takuya; Hatano, Akihiko; Hirai, Yoshiro . (2007). A Mild and Environmentally Benign Oxidation of Thiols to Disulfides. Synthesis, 2007(21), 3286–3289. doi:10.1055/s-2007-990800 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research