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Wang, Ming-Te; Degol, Jessica . (2013). Motivational pathways to STEM career choices: Using expectancy–value perspective to understand individual and gender differences in STEM fields. Developmental Review, 33(4), 304–340. doi:10.1016/j.dr.2013.08.001 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research