M. Aaboud, G. Aad, B. Abbott, D. C. Abbott, B. Ali, K. Augsten, B. Bergmann, D. Caforio, P. Gallus, M. Havránek et al.: Measurements of inclusive and differential fiducial cross-sections of t(t)over-bar gamma production in leptonic final states at root s=13 TeV in ATLAS. The European Physical Journal C 79(5), 382 (2019). doi:10.1140/epjc/s10052-019-6849-6