@inproceedings{inproceedingsdefad2de,
title   = {Personal Charisma or the Economy?: Macroeconomic indicators of presidential approval ratings in Brazil},
author = {Ferreira, Alex Luiz and Sakurai, Sérgio Naruhiko},
year = {2011},
publisher = {ANPEC},
booktitle   = {Encontro Nacional de Economia}
}