◂
sci
hub

to open science
Harris, A.; Spaeth, G.L.; Sergott, R.C.; Katz, L.J.; Cantor, Louis B.; Martin, B.J. . (1995). Retrobulbar Arterial Hemodynamic Effects of Betaxolol and Timolol in Normal-Tension Glaucoma. American Journal of Ophthalmology, 120(2), 168–175. doi:10.1016/s0002-9394(14)72604-2 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research