TY  - BOOK
AU  - Hopf,  A. Frederic.
TI  - Generation of conzugate wave from a weak signal
PY  - 1980///
CY  - Optical Science Centre
PB  - Arizona
UR  - http://14.139.222.13:80/cgi-bin/koha/opac-detail.pl?biblionumber=8666
ER  -