◂
sci
hub
to open science
J. C. Manning and J. van Staden. (1987). The Functional Differentiation of the Testa in Seed of Indigofera parviflora (Leguminosae: Papilionoideae). Botanical Gazette, 148(1), 23–34. doi:10.2307/2995380 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research