1. M.G. Poghosyan, J. Phys. G 38, 124044 (2011). arXiv:1109.4510 [hep-ex]
2. ALICE Collaboration, First proton–proton collisions at the LHC as observed with the ALICE detector: measurement of the charged particle pseudorapidity density at $$\sqrt{s} = 900$$ s = 900 GeV, Eur. Phys. J. C 65, 111 (2010). arXiv:0911.5430 [hep-ex]
3. G. Aad et al. (ATLAS Collaboration), Nat. Commun. 2, 463 (2011). arXiv:1104.0326 [hep-ex]
4. CMS Physics Analysis Summary, Measurement of the inelastic pp cross section at s = 7 TeV with the CMS detector. CMS PAS FWD 11 001
5. F. Ferro (TOTEM Collaboration), AIP Conf. Proc. 1350, 172 (2011)