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\bibitem{ATLASCollaborationAad_etal2014} ATLAS Collaboration(Aad, G. et al), Cabrera Urban, S., Castillo Gimenez, V., Costa, M. J., Fassi, F., Ferrer, A., et al. (2014). Measurements of Four-Lepton Production at the Z Resonance in pp Collisions at root s=7 and 8 TeV with ATLAS. \textit{Phys. Rev. Lett.}, \textit{112}(23), 231806--18pp.

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