APPLIED PHYSICS LETTERS, vol. 93, no. 19, 2008-11-10
APPLIED PHYSICS LETTERS, vol. 95, no. 19, page. 191105, 2009-11-09
APPLIED PHYSICS LETTERS, vol. 94, no. 11, 2009-03-16
APPLIED PHYSICS LETTERS, vol. 94, no. 8, 2009-02-23
APPLIED PHYSICS LETTERS, vol. 91, no. 18, 2007-10-29
APPLIED PHYSICS LETTERS, vol. 91, no. 12, 2007-09-17