0379-3982 0379-3982 S0379-39822017000400080 10.18845/tm.v30i4.3413 Colombia Colombia Colombia 00 12 2017 00 12 2017 30 4 80 92

[1] 2011 [2] 2007 3 3 12-22 [3] Nc State University 2011 [4] 2007 794-808 [5] 2011 50-65 [6 ] 1997 [7] 2009 9-25 [8] 2010 243-57 [9] 2010 1st ed. [10] 1999 51 1071-5819 1071-5819 135-47 [11] Data, Refsnes 2016 [12] Xfuzzy 2008