IEEE TRANSACTIONS ON NANOTECHNOLOGY, vol. 10, no. 4, page. 699 - 705, 2011-07
Japanese Journal of Applied Physics, vol. 50, no. 1, 2011-01
JOURNAL OF APPLIED PHYSICS, vol. 112, no. 3, 2012-08-01
ELECTRONICS LETTERS, vol. 50, no. 24, page. 1877 - U245, 2014-11-20