0864-084X 0864-084X S0864-084X2018000200054 Cuba 00 12 2018 00 12 2018 64 54 58

[1] 2014 50 128 [2] 1997 401 329-44 [3] 2002 483 830-2 [4] 2000 [5] 2016 57 319-30 [6] 2009 42 441-6 [7]