1794-1237 1794-1237 S1794-12372019000100065 10.24050/reia.v16i31.1230 Colombia 00 06 2019 00 06 2019 16 31 65 76

2014 13 2008 13 236-40 2016 15 2 2 183 2015 2015 657-62 2007 39 2 2 32-6 2008 199-204 2015 12-7 2015 Taiwan 2017 719-31 2009 2010 70-5 2015 2015 2014 47 2016 Pennsilvania, USA 2014 116 2014 14 4 4 26:1-26:28 2016 2016 367 2012 33-42 2007 39 4 4 204-23 2011 1-6 2011 27 1 1 36 2000 2003 1-58113-648-X/03/0002 1-58113-648-X/03/0002 2008 21 21 63-83 2011 2 4 4 71-6 1999 29 6 6 153154