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Jackie Eritaia; Stephen J. Wood; Geoffrey W. Stuart; Nicola Bridle; Paul Dudgeon; Paul Maruff; Dennis Velakoulis; Christos Pantelis. (2000). An optimized method for estimating intracranial volume from magnetic resonance images. , 44(6), 973–977. doi:10.1002/1522-2594(200012)44:6<973::aid-mrm21>3.0.co;2-h 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research