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 inelastic proton-proton cross-section at root s=7 TeV with the ATLAS detector. Nature Communications 2(1), 463 (2011). doi:10.1038/ncomms1472