0104-7043 0104-7043 S0104-70432016000300137 10.2015/01047043v25n472016137 Brazil Brazil 00 12 2016 00 12 2016 25 47 137 151

45 45 57-67 21 5 5 598-628 9 2 2 191-211 21 5 5 571-97 21 5 5 557-70 1 1 1 1-15 14 40 40 143-55