MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, vol. 51, no. 12, page. 2895 - 2898, 2009-12
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, vol. 51, no. 6, page. 1464 - 1467, 2009-06
MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, vol. 51, no. 4, page. 956 - 959, 2009-04