2177-6059 2177-6059 S2177-60592017000200233 10.18593/r.v42i2.12956 Brazil 00 08 2017 00 08 2017 42 2 233 258

38 2 2 373-88 15 2 2 301-18 24 4 4 305-31 8 1 1 147-64 10 3 3 393-410 24 2 2 297-327 80 330-36 40 101-16 92 4 4 548-73