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Seo, D. K., Perdue, K., Ren, J., & Whangbo, M. H. (1997). Study of scanning tunneling microscopy images and probable relaxations of the SrTiO3(100) surface by electronic structure calculations. SURFACE SCIENCE, 370(2-3), 245–251. https://doi.org/10.1016/S0039-6028(97)80003-9