APPLIED PHYSICS LETTERS, vol. 90, no. 5, 2007-01-29
JOURNAL OF ELECTRONIC MATERIALS, vol. 36, no. 4, page. 533 - 537, 2007-04
APPLIED PHYSICS LETTERS, vol. 91, no. 12, 2007-09-17
JOURNAL OF APPLIED PHYSICS, vol. 101, no. 11, 2007-06-01
APPLIED PHYSICS LETTERS, vol. 89, no. 10, 2006-09-04