1. Handbook of Microwave Measurements. (Edited by M. Sucher and J. Fox.) Vol. II., chapter IX, Polytechnic Institute of Brooklyn, Wiley, N. Y. 1963.
2. Hippel A. R., Dielectric and Waves, Wiley, N. Y. 1954.
3. Jacobs H. et al., Proc. I.R.E.49 (1961), 928, Proc. IEEE51 (1963), 608.
4. Bhar J. N., Proc. IEEE51 (1963), 1623.
5. Champlin K. S., Armstrong D. B., Proc. I.R.E.50 (1962), 232.