sci
hub

to open science
Shen, Mingxuan; Mei, Chunhui; Deng, Shounian . (2019). Analysis on structured stability of highly nonlinear pantograph stochastic differential equations. Systems Science & Control Engineering, 7(3), 54–64. doi:10.1080/21642583.2019.1651679 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research