@misc{miscef143c93,
title   = {Anisotropy and chemical composition of ultra-high energy cosmic rays using arrival directions measured by the Pierre Auger Observatory},
author = {Abreu, P and Albuquerque, Ivone Freire da Mota e and Gouffon, Philippe and Carvalho, W Rodrigues de and Tridapalli, D B},
year = {2011}
}