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3. Clark J.andHarrison G.R.(1962).Miniaturized coaxial ferrite devises.Microw. J. (June):108–118.
4. Propagation in a dielectric‐loaded parallel plane waveguide;Cohn M.;IRE Trans. Microw. Theory Tech.,1959
5. Design considerations for broadband ferrite coaxial line isolators;Duncan B.J.;Proc. IRE,1957