0102-5473 0102-5473 S0102-54732016000200510 10.5007/2175-795X.2016v34n2p510 Brazil 00 08 2016 00 08 2016 34 2 510 532

22 75-89 19 1 1 15-22 41 17 72 72 11-33 25 2 2 391-414 13 1 1 44-62 1 8 8 33-42