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You Osanai; Ma San Mon; Takeshi Noro; Hirotoshi Mori; Hisaki Nakashima; Mariusz Klobukowski; Eisaku Miyoshi. (2008). Revised model core potentials for first-row transition-metal atoms from Sc to Zn. , 452(1-3), 210–214. doi:10.1016/j.cplett.2007.12.019 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research