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Xia, Yudong; Ding, Qiang; Jing, Nijie; Jiang, Aipeng; Zhang, Xuejun; Deng, Shiming . (2020). A review on the operational instability of vapor compression system. International Journal of Refrigeration, (), S0140700720304345–. doi:10.1016/j.ijrefrig.2020.10.024 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research