2007-8064 2007-8064 S2007-80642018000200001 10.22201/enesl.20078064e.2018.17.63408 Mexico Mexico 00 00 2018 00 00 2018 6 17 1 7

2007 2 550-9 2015 33 2 2 65-8 2015 47 3 3 1033-8 2012 28 1327-50 2004 2013 8 123-36 1994 12 133-41 2008 56 474 474 12-27 2016 2010 4 83-8 2007 87 14-23 2009 9 385-9 2009 19-24 2006 43 221-7 2008 163 234-42 2003 41 271-6 2005 40 260-8 2004 225-39 1962 2 176-7 2013 13 511-25 2006 195-230 2007 61-3 1963 33 272-8 Statistical Analysis System [SAS Institute] 2004 2003 2006 71 137-44 2003 255 571-86