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Hua, Qiqi; Yang, Chenfan; Wang, Yajie; Lv, Tiezheng . (2017). Pre-wetted treatment for optimized multicrystalline Si wafer texturing and its solar cell efficiency improvement. Journal of Materials Science: Materials in Electronics, 28(9), 6823–6828. doi:10.1007/s10854-017-6380-1 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research