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\bibitem{ATLASCollaborationAaboud_etal2020} ATLAS Collaboration(Aaboud, M. et al), Alvarez Piqueras, D., Aparisi Pozo, J. A., Bailey, A. J., Barranco Navarro, L., Cabrera Urban, S., et al. (2020). Measurements of top-quark pair spin correlations in the e mu channel at root s=13 TeV using pp collisions in the ATLAS detector. \textit{Eur. Phys. J. C}, \textit{80}(8), 754--43pp.

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