TY  - BOOK
ED  - THE INSTITUTION OF ELECTRICAL ENGINEERS
TI  - Electronics Letters,Volume 25, Number 14, 6th July 1989
U1  - 621.381 
PY  - 1989///
CY  - LONDON
PB  - THE INSTITUTE OF ELECTRICAL ENGINEERS
KW  -  E?LECTRONIQUE --PE?RIODIQUES
KW  - ELECTRONICS --PERIODICALS.
ER  -