0120-100X 0120-100X S0120-100X2018000100037 10.18273/revion.v31n1-2018006 Colombia 00 06 2018 00 06 2018 31 1 37 42

[1] 2011 16 164-73 [2] 2012 [3] 2007 34 2 2 105-15 [4] 2012 [5] 2014 30 [6] 1998 49 265-78 [7] 2013 [8] FNC 2014 30 13-34 [9] 2016 [10] Agronet [11] 2013 18 3 3 469-78 [12] 2008 [13] 2011 2 1 1 34-42 [14] 2016 9 217-29 [15] 2012 46 2 2 488-95 [16] 2015 46 [17] 2009 3 1 1 96-110 [18] 2011 [19] 2015 46 [20] 2004 31 72-82 [21] 2016 133 2 2 187-225 [22] 2016 212 225-33