G. Aad, B. Abbott, J. Abdallah, A. A. Abdelalim, A. Abdesselam, K. Augsten, T. Holý, T. Horažďovský, Z. Hubáček, J. Jakůbek et al.: Search for massive long-lived highly ionising particles with the ATLAS detector at the LHC. Physics Letters B 698(5), 353-370 (2011). doi:10.1016/j.physletb.2011.03.033