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Beilock, Sian L.; Wierenga, Sarah A.; Carr, Thomas H. . (2002). Expertise, attention, and memory in sensorimotor skill execution: Impact of novel task constraints on dual-task performance and episodic memory. The Quarterly Journal of Experimental Psychology Section A, 55(4), 1211–1240. doi:10.1080/02724980244000170 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research