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\bibitem{Saniz_etal2008} {\textquotedblleft}\textit{Orbital mixing and nesting in the bilayer manganites La$_{2-2x}$Sr$_{1+2x}$Mn$_{2}$O$_{7}$}{\textquotedblright}. Saniz R, Norman MR, Freeman AJ, Physical review letters \textbf{101}, 236402 (2008).   http://doi.org/10.1103/PhysRevLett.101.236402

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