1676-2592 1676-2592 S1676-25922019000400015 10.20396/etd.v21i4.8654805 Brazil Brazil 00 10 2019 00 10 2019 21 4 926 940

2001 2003 4 2005 2010 1998 2010 9 9 67-76 2008 2013 2006 2017 43 43 55-61 2016 18 4 4 769-88 2016 51-4 2010