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Zhe-Sheng Feng; Jin-Ju Chen; Chuan Zhang; Ning Zhao; Zi Liang. (2012). Formation of Al2O3–TiO2 composite oxide films on aluminum foil by cathodic electrodeposition and anodizing. , 38(3), 2501–2505. doi:10.1016/j.ceramint.2011.11.019 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research