1676-2592 1676-2592 S1676-25922014000300475 10.0000/016v03n8p475 Brazil Brazil 00 09 2014 00 09 2014 16 3 475 493

185 738 738 721-37 43 2 2 119-23 14 2 2 367-71 13 3 3 625-45 2 4 4 97-104 7 14 14 433-50