2007-0934 2007-0934 S2007-09342018000300665 10.29312/remexca.v9i3.1223 Mexico 00 05 2018 00 05 2018 9 3 665 673

2001 Medellin, Colombia 1999 2001 24 18-22 2012 2011 1984 2000 primera