0185-3309 0185-3309 S0185-33092019000200005 10.18781/r.mex.fit.1902-2 Mexico Mexico 00 00 2019 00 00 2019 37 2 279 286

2015 160 1593-619 1983 1 19-21 2003 87 1397 2019 37 1 1 135-46 1994 3 294-9 1996 86 1288-93