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Asuha; T. Kobayashi; O. Maida; M. Inoue; M. Takahashi; Y. Todokoro; H. Kobayashi. (2002). Ultrathin silicon dioxide layers with a low leakage current density formed by chemical oxidation of Si. , (), –. doi:10.1063/1.1517723 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research