0121-1935 0121-1935 S0121-19352016000200055 10.25100/rc.v20i2.4673 Colombia 00 12 2016 00 12 2016 20 2 55 61

1 2013 17 2 2 95-103 2 1902 19 445-90 3 1954 3 745-53 4 1970 1 354-9 5 1997 150 544-56 6 1999 165 101-16 7 2013 47 2 2 181-90