JOURNAL OF APPLIED PHYSICS, vol. 93, no. 8, page. 4769 - 4775, 2003-04-15
MATERIALS SCIENCE FORUM, vol. 439, page. 1 - 6, 2003-01
APPLIED PHYSICS LETTERS, vol. 79, no. 19, page. 3137 - 3139, 2001-11-05
APPLIED PHYSICS LETTERS, vol. 79, no. 7, page. 1051 - 1053, 2001-08-13