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\bibitem{ATLASCollaborationAad_etal2012} ATLAS Collaboration(Aad, G. et al), Amoros, G., Cabrera Urban, S., Castillo Gimenez, V., Costa, M. J., Ferrer, A., et al. (2012). Search for contact interactions in dilepton events from pp collisions at root s=7 TeV with the ATLAS detector. \textit{Phys. Lett. B}, \textit{712}(1-2), 40--58.

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