Applied Physics Letters, vol. 98, no. 26, page. 263508 - 263508-3, 2011-06-27
Advanced Materials, vol. 22, no. 1, page. 53 - +, 2010-01
APPLIED PHYSICS LETTERS, vol. 100, no. 6, page. 063501(1) - 063501(4), 2012-02-06