Bulletin of the Brazilian Mathematical Society, New Series
Bulletin of the Brazilian Mathematical Society, New Series > 2003 > 34 > 3 > 401-415
Bulletin of the Brazilian Mathematical Society, New Series > 2003 > 34 > 3 > 457-477
Bulletin of the Brazilian Mathematical Society, New Series > 2003 > 34 > 3 > 479-488
Bulletin of the Brazilian Mathematical Society, New Series > 2003 > 34 > 3 > 417-435
Bulletin of the Brazilian Mathematical Society, New Series > 2003 > 34 > 3 > 347-348
Bulletin of the Brazilian Mathematical Society, New Series > 2003 > 34 > 3 > 361-388
Bulletin of the Brazilian Mathematical Society, New Series > 2003 > 34 > 3 > 349-360
Bulletin of the Brazilian Mathematical Society, New Series > 2003 > 34 > 3 > 509-528
Bulletin of the Brazilian Mathematical Society, New Series > 2003 > 34 > 3 > 489-507
Bulletin of the Brazilian Mathematical Society, New Series > 2003 > 34 > 3 > 389-400
Bulletin of the Brazilian Mathematical Society, New Series > 2003 > 34 > 3 > 437-455