M. Aaboud, G. Aad, B. Abbott, O. Abdinov, B. Ali, K. Augsten, D. Caforio, P. Gallus, M. Havránek, Z. Hubáček et al.: Search for direct top squark pair production in final states with two leptons in root s=13 TeV pp collisions with the ATLAS detector. The European Physical Journal C 77(12), 898 (2017). doi:10.1140/epjc/s10052-017-5445-x