0185-1276 0185-1276 S0185-12762020000100230 10.22201/iie.18703062e.2020.116.2719 Mexico 00 00 2020 00 00 2020 42 116 230 233 2009 1998 9 1 1 55-73 2007 10 30 30 43-51 2019 22 65 65 87 2008 301-17 1955 VII 36 36 2006 2006 2010 2003 2017 33