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Necpal, M; Martinkovič, M . (2019). Evaluation of Material Deformation During Process of Precise Carbon Steel Tube Cold Draw Forming. IOP Conference Series: Materials Science and Engineering, 465(), 012007–. doi:10.1088/1757-899X/465/1/012007 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research