Kim, Jong Bok; Kim, Kyung Chan; Ahn, Han Jin; Hwang, Byoung Har; Kim, Jong Tae; Jo, Sung Jin; Kim, Chang Su; Baik, Hong Koo; Choi, Chu Ji; Jo, Min Kyoung, et al.
ArticleIssue Date2007CitationAPPLIED PHYSICS LETTERS, v.91, no.2PublisherAMER INST PHYSICS