References
- Elliott , R. S. 1993 . An Introduction To Guided Waves and Microwave Circuits , Prentice Hall International, Inc .
- Collin , R. E. 1996 . Foundations of Microwave Engineering , McGraw- Hill .
- Themes , G. C and Mitra , S. K. 1973 . Modern Filter Theory and Design , John Wiley & Sons .
- Gradshteyn , I. S. and Ryzhik , I. M. 1980 . Table of Integrals, Series and Products , Academic Press .