sci
hub

to open science
Feng Chi, Rong Wu, Yue-can Zeng, Rui Xing, Yang Liu. (2013). Circulation insulin-like growth factor peptides and colorectal cancer risk: an updated systematic review and meta-analysis. , 40(5), 3583–3590. doi:10.1007/s11033-012-2432-z 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research