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Wang, Ganggang; Klein, Michael G; Tokonzaba, Etienne; Zhang, Yi; Holden, Lauren G; Chen, Xiaojiang S. (2007). The structure of a DnaB-family replicative helicase and its interactions with primase. , 15(1), 94–100. doi:10.1038/nsmb1356 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research