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Shihua Yuan, ; Wei Wu, . (2008). [IEEE 2008 Asia Simulation Conference - 7th International Conference on System Simulation and Scientific Computing (ICSC) - Beijing, China (2008.10.10-2008.10.12)] 2008 Asia Simulation Conference - 7th International Conference on System Simulation and Scientific Computing - Simulation study of a two-stroke Single Piston Hydraulic Free Piston Engine. , (), 1244–1249. doi:10.1109/asc-icsc.2008.4675560 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research