0124-5996 0124-5996 S0124-59962018000100209 10.18601/01245996.v20n38.09 Colombia Colombia 00 06 2018 00 06 2018 20 38 209 233

2001 26 87-113 2009 2008 8 2 2 190-220 1979 47 1 1 153-61 2000 148 148 1980 1997 2006 408 2015 2007