Nano Letters, vol. 15, no. 6, page. 3820 - 3826, 2015-06
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 19, no. 1-3, page. 199 - 203, 2005-01-30
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol. 19, no. 1-3, page. 205 - 208, 2005-01-30
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 48, no. 5, page. 1017 - 1021, 2006-05
APPLIED PHYSICS LETTERS, vol. 88, no. 14, page. 142501 - 142501, 2006-04-03
PHYSICAL REVIEW B, vol. 77, no. 14, page. 144501 - 144501, 2008-04