SCRIPTA MATERIALIA, vol. 63, no. 2, page. 231 - 234, 2010-07
SCRIPTA MATERIALIA, vol. 61, no. 9, page. 911 - 914, 2009-11
JOURNAL OF THE OPTICAL SOCIETY OF KOREA, vol. 16, no. 1, page. 22 - 28, 2012-03