@article{article9b7538ca,
title   = {Correlation of business cycles in the euro zone},
author = {Gonçalves, Carlos Eduardo Soares and Rodrigues Júnior, Mauro and Soares, Tiago de Menezes},
year = {2009},
doi = {10.1016/j.econlet.2008.11.011},
journal   = {Economics Letters}
}