G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim, A. Abdesselam, K. Augsten, T. Holý, T. Horažďovský, Z. Hubáček, J. Jakůbek et al.: Measurement of the top quark-pair production cross section with ATLAS in pp collisions at root s=7 TeV. The European Physical Journal C 71(3), 1577 (2011). doi:10.1140/epjc/s10052-011-1577-6