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Divinski, S. V.; Hisker, F.; Kang, Y.-S.; Lee, J.-S.; Herzig, Chr. . (2002). <sup>59</sup> Fe Grain Boundary Diffusion in Nanostructured γ-Fe–Ni. Zeitschrift für Metallkunde, 93(4), 256–264. doi:10.3139/146.020256 
An interview with Sci-Hub Founder Alexandra Elbakyan,Who exactly should pay for academic research