@inproceedings{inproceedingsd102a178,
title   = {Multicolor entanglement: three-field gaussian state},
author = {Coelho, A S and Barbosa, F A S and Martinelli, Marcelo and Nussenzveig, Paulo Alberto and Cassemiro, K N and Villar, A S},
year = {2011},
publisher = {SBF},
booktitle   = {Econtro de Física}
}