0121-8697 0121-8697 S0121-86972018000200005 10.14482/dere.50.0001 Argentina 00 12 2018 00 12 2018 50 5 12 2012 10-37 1997 191-201 2008 1975 2004 2017 1992 19 327-79 1910 44 12-36 1986 2011 12 1 1 171-90