1983-2117 1983-2117 S1983-21172008000200208 10.1590/1983-21172008100204 Brazil Brazil 00 12 2008 00 12 2008 10 2 208 221

AIP - AMERICAN INSTITUTE OF PHYSICS AIP - AMERICAN INSTITUTE OF PHYSICS R-441 R-441 AIP - AMERICAN INSTITUTE OF PHYSICS AIP - AMERICAN INSTITUTE OF PHYSICS R-441 R-441 17 4 4 369-69 50 50 56 9 9 46-6 IUPAP - INTERNACIONAL UNION OF PURE AND APPLIED PHYSICS IUPAP - INTERNACIONAL UNION OF PURE AND APPLIED PHYSICS 628-28 2 9 2 2 13 1 1 37-7

1983-2117 1983-2117 S1983-21172008000200208 10.1590/1983-21172008100204 Brazil Brazil 00 12 2008 00 12 2008 10 2 208 221

AIP - AMERICAN INSTITUTE OF PHYSICS AIP - AMERICAN INSTITUTE OF PHYSICS R-441 R-441 AIP - AMERICAN INSTITUTE OF PHYSICS AIP - AMERICAN INSTITUTE OF PHYSICS R-441 R-441 17 4 4 369-69 50 50 56 9 9 46-6 IUPAP - INTERNACIONAL UNION OF PURE AND APPLIED PHYSICS IUPAP - INTERNACIONAL UNION OF PURE AND APPLIED PHYSICS 628-28 2 9 2 2 13 1 1 37-7