@article{articlea0226691,
title   = {Security issues during Lula's administration: from the reactive to the assertive approach},
author = {Villa, Rafael Antonio Duarte and Viana, Manuela Trindade},
year = {2010},
doi = {10.1590/s0034-73292010000300006},
journal   = {Revista Brasileira de Política Internacional}
}