1990-8644 1990-8644 S1990-86442018000400174 Colombia 00 09 2018 00 09 2018 14 64 174 178

2009 24 1 1 1-27 2014 116 2 2 33-43 2001 7 36 36 2014 85 3 3 27-31 2012 12 47 47 459-72 2007 25 2 2 367-88 2001 41 207-22 2005 348 70-3 2007 5 1 1 145-52 1989