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Niu, Weifen; Guo, Lei; Li, Yinhui; Shuang, Shaomin; Dong, Chuan; Wong, Man Shing . (2015). Highly Selective Two-Photon Fluorescent Probe for Ratiometric Sensing and Imaging Cysteine in Mitochondria. Analytical Chemistry, (), acs.analchem.5b04329–. doi:10.1021/acs.analchem.5b04329 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research