1. R. Meredith and G. H. PreeceMillimetre Waveguide Components?chapter 20 of F. A. Benson ed.Millimetre and Submillimetre Waves ILIFFE BOOKS LTD, pp. 393?395, 1969.
2. J. C. WiltseChapter 1 of K. J. Button and J. C. WiltseInfrared and Millimeter Waves?Volume 4 Academic Press, p. 10, 1981.
3. E. K. Reedy and G. W. EwellChapter 2 of K. J. Button and J. C. WiltseInfrared and Millimeter Waves?Volume 4 Academic Press, pp. 34?35, 1981.
4. C. E. Brown and J. C. WiltseChapter 1 of N. C. Currie and C. E. BrownPrinciples and Applications of Millimeter-Wave Radar Artech House, p. 11, 1987.
5. E. K. ReedyChapter 2 of N.C. Currie and C. E. BrownPrinciples and Applications of Millimeter-Wave Radar Artech House, p. 39, 1987.