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Miguel, José P.; Silva, José T.; Prieto, Gerardo . (2013). Career Decision Self-Efficacy Scale — Short Form: A Rasch analysis of the Portuguese version. Journal of Vocational Behavior, 82(2), 116–123. doi:10.1016/j.jvb.2012.12.001 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research