0120-100X 0120-100X S0120-100X2018000100081 10.18273/revion.v31n1-2018013 Colombia 00 06 2018 00 06 2018 31 1 81 88

[1] 2005 [2] 2015 410 19-25 [3] 2014 155 269-74 [4] 2006 515 2316-21 [5] 2012 58 2 2 44-6 [6] 2011 126 248-57 [7] 2001 139 179-87 [8] 2008 179 1615 [9] 2014 28 259-64 [10] 2016 26 464-71 [11] 2016 676 575 [12] 2016 44 12 12 3032-6 [13] 2017 786 1-5