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\bibitem{Tsirlin_etal2007} {\textquotedblleft}\textit{Spin ladder compound Pb$_{0.55}$Cd$_{0.45}$V$_{2}$O$_{5}$: synthesis and investigation}{\textquotedblright}. Tsirlin AA, Shpanchenko RV, Antipov EV, Bougerol C, Hadermann J, Van Tendeloo G, Schnelle W, Rosner H, Physical review : B : condensed matter and materials physics \textbf{76}, 104429 (2007).   http://doi.org/10.1103/PhysRevB.76.104429

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