G. Aad, B. Abbott, J. Abdallah, A.A. Abdelalim, A. Abdesselam, Z. Hubáček, M. Vlasák, K. Augsten, T. Horažďovský, J. Jakůbek et al.: Search for first generation scalar leptoquarks in pp collisions at root s=7 TeV with the ATLAS detector. Physics Letters B 709(3), 158-176 (2012). doi:10.1016/j.physletb.2012.02.004