1. (1) Smain Amari, Jens Bornemann and Rüdiger Valdieck, “Fast and accurate analysis of waveguide filters by the coupled integral equations technique”, IEEE Trans. Microwave Theory Tech, Vol.45, No.9, SEPTEMBER 1997.
2. (2) Vladimir A. Labay, Jens Bornemann, Smain Amari and M. Damaschke, “Direct coupled waveguide filters for the lower Gigahertz frequency range,” International Journal of RF and Microwave CAE 12:217–225, 2002.
3. (3) Amr Abdelmonem, Ji-Fuh Liang, Hui-Wen Yao, and Kawthar A. Zaki, “Full-wave design of spurious free D.R. TE Mode band pass filters”, IEEE Trans. Microwave Theory Tech, Vol.43, No.4, 1995.
4. (4) J. Uher, J. Bornemann, and U. Rosenberg, “Waveguide Components for Antenna Feed Systems”: Theory and CAD. Norwood, MA: Artech House, 1993.
5. (5) Jan Michael Reiter, Fritz Arndt, “Rigorous analysis of arbitrarily shaped H and E plane discontinuities in rectangular waveguides by a full-wave boundary contour mode-matching method," IEEE Trans. Microwave Theory Tech, Vol.43, No4, April 1995.