APPLIED PHYSICS LETTERS, vol. 81, no. 22, page. 4212 - 4214, 2002-11-25
PHYSICAL REVIEW B, vol. 66, no. 10, 2002-09-01
PHYSICA B-CONDENSED MATTER, vol. 312, page. 729 - 731, 2002-03
PHYSICA B-CONDENSED MATTER, vol. 312, page. 673 - 674, 2002-03