0187-893X 0187-893X S0187-893X2016000200093 10.1016/j.eq.2016.02.002 Mexico 00 00 2016 00 00 2016 27 2 93 96

2015 2007 282 e2 1979 22 135-92 1989 86 5237-41 1986 83 5057-61 2005 102 16125-7