1409-4703 1409-4703 S1409-47032016000300028 10.15517/aie.v16i3.25955 EC EC CU EC CU 00 12 2016 00 12 2016 16 3 28 48

1999 1971 2007 1999 2009 2005 2010 2005 2011 2004 1961 2009 34 1 1 80-96 1963 2011