Progress In Electromagnetics Research, vol. 141, page. 607 - 618, 2013-08
IEEE Geoscience and Remote Sensing Letters, vol. 10, no. 3, page. 476 - 480, 2013-05
IEEE Antennas and Wireless Propagation Letter, vol. 12, page. 955 - 958, 2013-01
Progress In Electromagnetics Research, vol. 134, page. 543 - 558, 2013-01