0102-5473 0102-5473 S0102-54732017000400018 10.5007/2175-795X.2017v35n4p1277 Brazil Brazil 00 12 2017 00 12 2017 35 4 1277 1295

97 97 47-63 4 8 8 432-43 2 1/2 1/2 65-76 10 28 28 291-316 6 6 69-97 28 28 137-54