@article{article7748ee66,
title   = {Bounds on the density of sources of ultra-high energy cosmic rays from the Pierre Auger Observatory},
author = {Abreu, P. and Albuquerque, Ivone Freire da Mota e and Souza, Vitor de and Gouffon, Philippe and Peixoto, C J Todero and Tridapalli, D B},
year = {2013},
doi = {10.1088/1475-7516/2013/05/009},
journal   = {Journal of Cosmology and Astroparticle Physics}
}