TY  - BOOK
AU  - Helszajn,J..
TI  - Ridge waveguides and passive microwave components
T2  - IEE electromagnetic waves series
SN  - 0852967942
AV  - TK7872  .H44 2000
PY  - 2000///
CY  - London
PB  - The Institution of Electrical Engineers
KW  - Electric filters, Passive
KW  - Microwave filters
KW  - Microwave circuits
ER  -