2072-8174 2072-8174 S2072-81742017000200084 10.18004/rdn2017.0009.02.084-090 Paraguay 00 12 2017 00 12 2017 9 2 84 90

2013 2 v 4ª ed 749 2011 38 3 3 261-2 2014 2006 9 6 6 e849-50 2016 5 6-10 2014 111 12 12 205-11 2008 358 7 7 2011