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Wang, Lei; Li, Liuhe; Kuang, Xiaocong . (2018). Effect of substrate bias on microstructure and mechanical properties of WC-DLC coatings deposited by HiPIMS. Surface and Coatings Technology, (), S0257897218307953–. doi:10.1016/j.surfcoat.2018.07.088 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research