G. Aad, B. Abbott, D. C. Abbott, A. Abud, B. Ali, K. Augsten, B. Bergmann, T. Billoud, M. Havránek, Z. Hubáček et al.: Observation of WWW Production in pp Collisions at root s=13 TeV with the ATLAS Detector. Physical Review Letters 129(6), 061803 (2022). doi:10.1103/PhysRevLett.129.061803