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An, Tong; Fang, Chao; Qin, Fei; Li, Huaicheng; Tang, Tao; Chen, Pei . (2018). Failure study of Sn37Pb PBGA solder joints using temperature cycling, random vibration and combined temperature cycling and random vibration tests. Microelectronics Reliability, 91(), 213–226. doi:10.1016/j.microrel.2018.10.003 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research