TY  - BOOK
AU  - Helszajn, J
TI  - Stripline circulator: theory and practice
T2  - Wiley series in Microwave and Optical Engineering
SN  - 9780470258781
U1  - 621.381331 
PY  - 2008///
CY  - Canada
PB  - John Wiley & sons
ER  -