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Li, Huijin; Han, Dedong; Liu, Liqiao; Dong, Junchen; Cui, Guodong; Zhang, Shengdong; Zhang, Xing; Wang, Yi . (2017). Bi-layer Channel AZO/ZnO Thin Film Transistors Fabricated by Atomic Layer Deposition Technique. Nanoscale Research Letters, 12(1), 223–. doi:10.1186/s11671-017-1999-7 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research