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\bibitem{ATLASCollaborationAad_etal2020} ATLAS Collaboration(Aad, G. et al), Aparisi Pozo, J. A., Bailey, A. J., Cabrera Urban, S., Cardillo, F., Castillo, F. L., et al. (2020). Evidence for ttbar ttbar production in the multilepton final state in proton-proton collisions at root s=13 TeV with the ATLAS detector. \textit{Eur. Phys. J. C}, \textit{80}(11), 1085--32pp.

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