DEC 80828 - 28/11/1977: ALTERA ARTS. 4, 7 E 8.
DEC 83089 - 24/01/1979: ALTERA ART. 3.
DEC 87201 - 19/05/1982: SUPRIME PAR. UNICO ART. 3; ALT. ART. 10.
DEC 89768 - 12/06/1984: ALTERA ART. 3.
DEC 94500 - 19/06/1987: ALTERA ARTS. 1 E 3.
DEC 96211 - 22/06/1988: ALTERA ART. 4.
DEC 98800 - 05/01/1990: ALTERA ART. 3.