1.
2.
Ridge Waveguides and Passive Microwave Components (Iee Electromagnetic Waves Series, 49)
by J. Helszajn
ISBN: 9780852967942
List Price: $135.00
3.
Green's Function, Finite Elements and Microwave Planar Circuits
by J. Helszajn
ISBN: 9780471966852
List Price: $225.00