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\bibitem{ATLASCollaborationAad_etal2019} ATLAS Collaboration(Aad, G. et al), Alvarez Piqueras, D., Aparisi Pozo, J. A., Bailey, A. J., Barranco Navarro, L., Cabrera Urban, S., et al. (2019). Evidence for the production of three massive vector bosons with the ATLAS detector. \textit{Phys. Lett. B}, \textit{798}, 134913--22pp.

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