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\bibitem{ATLASCollaborationAad_etal2021} ATLAS Collaboration(Aad, G. et al), Aparisi Pozo, J. A., Bailey, A. J., Cabrera Urban, S., Cardillo, F., Castillo, F. L., et al. (2021). Measurement of the production cross section of pairs of isolated photons in pp collisions at 13 TeV with the ATLAS detector. \textit{J. High Energy Phys.}, \textit{11}(11), 169--53pp.

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