IEEE Transactions on Antennas and Propagation, vol. 61, no. 4, page. 1573 - 1580, 2013-04
Microwave and Optical Technology Letters, vol. 55, no. 2, page. 238 - 241, 2013-02
IEEE Antennas and Wireless Propagation Letters, vol. 11, page. 1659 - 1662, 2013-01