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Ana R. Santiago; Tiago S. Pereira; Manuel J. Garrido; Armando J. Cristóvão; Paulo F. Santos; António F. Ambrósio. (2006). High glucose and diabetes increase the release of [3H]-d-aspartate in retinal cell cultures and in rat retinas. , 48(6-7), 0–458. doi:10.1016/j.neuint.2005.10.013 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research