1657-6276 1657-6276 S1657-62762019000100001 10.14482/pege.46.1102 00 06 2019 00 06 2019 46 1 4 1984 11 291-7 1987 2016 15 2 2 1995 1-15 2010 1992 19 3013 1997 , 23 4 4 312-25 1994 1