THIN SOLID FILMS, vol. 515, no. 4, page. 1932 - 1937, 2006-12-05
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 61, no. 4, page. 1620 - 1627, 2013-04
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 58, no. 10, page. 2562 - 2574, 2010-10
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, vol. 63, no. 2, page. 559 - 571, 2015-02