PHYSICAL REVIEW LETTERS, vol. 114, no. 16, 2015-04-22
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 53, no. 2, page. 967 - 972, 2008-08
PHYSICAL REVIEW LETTERS, vol. 94, no. 14, 2005-04-15
PROGRESS OF THEORETICAL PHYSICS, vol. 108, no. 6, page. 1021 - 1030, 2002-12
PHYSICAL REVIEW B, vol. 66, no. 7, 2002-08-15
PHYSICAL REVIEW B, vol. 65, no. 22, 2002-06-01
JOURNAL OF PHYSICS-CONDENSED MATTER, vol. 12, no. 16, page. 3817 - 3834, 2000-04-17
PHYSICAL REVIEW B, vol. 52, no. 6, page. 4360 - 4365, 1995-08-01
PHYSICAL REVIEW B, vol. 49, no. 23, page. 16248 - 16255, 1994-06-15
PHYSICAL REVIEW B, vol. 48, no. 9, page. 6217 - 6224, 1993-09-01