IEEE International Conference on Microwave and Millimeter Wave Technology (ICMMT) 2008, page. 270 - 273
in 2008 IEEE International Microwave Symposium (IMS), page. 427 - 430
IEEE IRPS(international reliability physics symposium), page. 306 - 309
IEEE Radio and Wireless Symposium 2008, page. 73 - 76
5th International Symposium on Advanced Gate Stack Technology (ISAGST 2008), page. 6