JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, vol. 46, no. 8A, page. 5259 - 5263, 2007-08
JOURNAL OF APPLIED PHYSICS, vol. 100, no. 4, page. 44106-1 - 44106-5, 2006-08-15
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, vol. 45, no. 6A, page. 5174 - 5177, 2006-06
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, vol. 152, no. 4, page. F45 - F48, 2005-03