sci
hub

to open science
Högner, M; Tosa, V; Pupeza, I . (2017). Generation of isolated attosecond pulses with enhancement cavities—a theoretical study. New Journal of Physics, 19(3), 033040–. doi:10.1088/1367-2630/aa6315 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research