JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 45, page. S605 - S608, 2004-12
METALS AND MATERIALS INTERNATIONAL, vol. 10, no. 6, page. 555 - 558, 2004-12
ELECTROCHEMICAL AND SOLID STATE LETTERS, vol. 7, no. 12, page. G313 - G315, 2004-01
JOURNAL OF APPLIED PHYSICS, vol. 93, no. 11, page. 9024 - 9029, 2003-06-01
APPLIED PHYSICS LETTERS, vol. 77, no. 3, page. 349 - 351, 2000-07-17