@Article{ BUENO_NAVARRO_NAVAS,

author = { ANTONIO BUENO VILLAR and JOSE LUIS NAVARRO QUIRANTE and SERGIO NAVAS CONCHA } ,

title = { Measurement of the proton-air cross-section at s=57 TeV with the Pierre Auger Observatory },

journal = { Physical Review Letters },

year = { 2012 },

pages = { 062002- },

doi = { http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.109.062002 },

}