G. Aad, T. Abajyan, B. Abbott, J. Abdallah, S. Abdel Khalek, K. Augsten, P. Gallus, T. Holý, J. Jakůbek, Z. Kohout et al.: A search for prompt lepton-jets in pp collisions at root s=7 TeV with the ATLAS detector. Physics Letters B 719(4-5), 299-317 (2013). doi:10.1016/j.physletb.2013.01.034