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\bibitem{LHCbCollaborationAaij_etal2014} LHCb Collaboration(Aaij, R. et al), Martinez-Vidal, F., Oyanguren, A., Ruiz Valls, P., \& Sanchez Mayordomo, C. (2014). Evidence for the decay X(3872) -> psi(2S)gamma. \textit{Nucl. Phys. B}, \textit{886}, 665--680.

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