JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 49, no. 1, page. 89 - 96, 2006-07
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, vol. 362, page. 9 - 13, 2015-11-01
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, vol. 335, page. 1 - 7, 2014-09-15
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, vol. 266, no. 6, page. 863 - 871, 2008-03