0187-893X 0187-893X S0187-893X2016000200139 10.1016/j.eq.2015.11.006 Brazil 00 00 2016 00 00 2016 27 2 139 142

2008 85 555-7 2013 36 1464-7 2012 35 1887-90 2003 26 123-9 2015 92 1217-20 2006 359 1947-54 2015 92 575-8 2010 33 1603-6 2000 41 8199-202