0300-9041 0300-9041 S0300-90412018000800519 10.24245/gom.v86i8.1399 México Mexico México 00 00 2018 00 00 2018 86 8 519 529

1 2 3 4 5 6 7 8 9 10 11 12 13 2011 63 6 6 665-702 14 2010 78 4 4 S415-35 15 16 17 18 19 20 21 22 23