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Martin Tschöpl; Robert C. Miller; John Pelton; Jean-Claude Stoclet; Bernard Bucher. (1993). Vasoconstrictor effects of various neuropeptide Y analogues on the rat tail artery in the presence of phenylephrine. , 110(3), –. doi:10.1111/j.1476-5381.1993.tb13927.x 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research