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Chao, Xiaodong D.; Ma, Yihui H.; Luo, Peng; Cao, Lei; Lau, Wayne Bond; Zhao, Baocheng C.; Han, Feng; Liu, Wei; Ning, Weidong D.; Su, Ning; Zhang, Lei; Zhu, Jie; Fei, Zhou; Qu, Yan . (2013). Up-regulation of Heme oxygenase-1 attenuates brain damage after cerebral ischemia via simultaneous inhibition of superoxide production and preservation of NO bioavailability. Experimental Neurology, 239(), 163–169. doi:10.1016/j.expneurol.2012.09.020 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research