MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, vol. 52, no. 2, page. 295 - 299, 2010-02
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, vol. 52, no. 2, page. 484 - 487, 2010-02
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, vol. 20, no. 2, page. 112 - 114, 2010-02
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 56, no. 1, page. 133 - 136, 2010-01