1809-3876 1809-3876 S1809-38762016000200493 10.23925/1809-3876.2016v14i2p0493 Brazil Brazil Brazil 00 06 2016 00 06 2016 14 2 493 518

3 1 1 28-49 33 687-93 29 1 1 167-82 4 8 8 06-14 68 68 46-7 15 15 135-58