References
- Auld, B. A., “The synthesis of symmetrical waveguide circulators”, I.R.E. Trans, on Microwave Theory and Techniques, MTT-4 (1959), pp. 223–27.
- Montgomery, C. G., Dicke, R. H. & Purcell, E. M., Principles of Microwave Circuits (McGraw-Hill Book Co., New York), 1948, Chapter 12.
- Milano, U., Saunders, J. H., & Davis, L., “ Y junction strip-line circulator”, I.R.E. Trans on Microwave Theory and Techniques, MTT-8 (1960), pp. 346–51.