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\bibitem{ATLASCollaborationAad_etal2011} ATLAS Collaboration(Aad, G. et al), Amoros, G., Cabrera Urban, S., Castillo Gimenez, V., Costa, M. J., Escobar, C., et al. (2011). Measurement of underlying event characteristics using charged particles in pp collisions at sqrt(s) = 900 GeV and 7 TeV with the ATLAS detector. \textit{Phys. Rev. D}, \textit{83}(11), 112001--34pp.

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