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R.S. Silverstein; B.L. Tempel. (2006). Atp2b2, encoding plasma membrane Ca2+-ATPase type 2, (PMCA2) exhibits tissue-specific first exon usage in hair cells, neurons, and mammary glands of mice. , 141(1), 0–257. doi:10.1016/j.neuroscience.2006.03.036 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research