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Ding, Hongbing; Wang, Chao; Chen, Chao . (2014). Non-equilibrium condensation process of water vapor in moist air expansion through a sonic nozzle. Flow Measurement and Instrumentation, 40(), 238–246. doi:10.1016/j.flowmeasinst.2014.08.002 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research