@article{article12e897ec,
title   = {Depth of maximum of air-shower profiles at the Pierre Auger Observatory. I. Measurements at energies above '10 POT. 17.8' eV},
author = {Aab, A. and Albuquerque, Ivone Freire da Mota e and Souza, Vitor de and Gouffon, Philippe and Santos, Edivaldo Moura and Peixoto, Carlos Jose Todero},
year = {2014},
doi = {10.1103/PhysRevD.90.122005},
journal   = {Physical Review D}
}