NANO, vol. 3, no. 6, page. 415 - 431, 2008-12
BULLETIN OF THE KOREAN CHEMICAL SOCIETY, vol. 28, no. 11, page. 2056 - 2060, 2007-11-20
CURRENT APPLIED PHYSICS, vol. 6, no. 4, page. 747 - 751, 2006-07