Applied Physics Letters
Applied Physics Letters > 2009 > 94 > 25 > 253115 - 253115-3
Applied Physics Letters > 2009 > 94 > 26 > 262105 - 262105-3
Applied Physics Letters > 2009 > 94 > 26 > 261904 - 261904-3
Applied Physics Letters > 2009 > 94 > 26 > 261901 - 261901-3