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Wang, Ding; Lou, Yanlong; Wang, Run; Wang, Pengpeng; Zheng, Xuejun; Zhang, Yong; Jiang, Nan . (2015). Humidity sensor based on Ga2O3 nanorods doped with Na+ and K+ from GaN powder. Ceramics International, (), S0272884215015230–. doi:10.1016/j.ceramint.2015.07.211 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research