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Tao, Lianjin; Hou, Sen; Zhao, Xu; Qiu, Wenge; Li, Tianbin; Liu, Chunxiao; Wang, Ke . (2015). 3-D shell analysis of structure in portal section of mountain tunnel under seismic SH wave action. Tunnelling and Underground Space Technology, 46(), 116–124. doi:10.1016/j.tust.2014.11.001 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research