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Jonathan van 't Riet; Robert A.C. Ruiter; Marieke Q. Werrij; Hein de Vries. (2008). The influence of self-efficacy on the effects of framed health messages. , 38(5), 800–809. doi:10.1002/ejsp.496 

An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research