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\bibitem{ElShinawi_etal2010} {\textquotedblleft}\textit{Synthesis and characterization of La$_{1+x}$Sr$_{2-x}$CoMnO$_{7-\delta}$ (x=0,0.2, \delta=0,1)}{\textquotedblright}. El Shinawi H, Bertha A, Hadermann J, Herranz T, Santos B, Marco JF, Berry FJ, Greaves C, Journal of solid state chemistry \textbf{183}, 1347 (2010).   http://doi.org/10.1016/j.jssc.2010.04.018

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