1982-7806 1982-7806 S1982-78062015000200651 10.14393/che-v14n2-2015-651 00 05 2015 00 05 2015 14 2 651 665

1994 2005 2008 2 1 1 9-38 1994 2001 2002 2002 2002 2004 2004 2005 49 49 11-42 2006 1999 1937