0036-3634 0036-3634 S0036-36342018000200007 10.21149/8605 Mexico 00 04 2018 00 04 2018 60 2 120 122 1 2015 79 6 6 85 2 Parametría 2013 3 2015 12 46 4 2016 5 2016 41 8-13