G. Aad, T. Abajyan, B. Abbott, J. Abdallah, S. A. Khalek, K. Augsten, T. Holý, Z. Hubáček, J. Jakůbek, Z. Kohout et al.: Search for anomalous production of prompt like-sign lepton pairs at root √s=7 TeV with the ATLAS detector. Journal of High Energy Physics 2012(12), 7 (2012). doi:10.1007/JHEP12(2012)007