TY  - RPRT
TI  - First evidence for 1-mm wavelength parametric amplification in a Josephson junction microwave source
AU  - Ulrich, B. T.
AU  - Levinsen, M. T.
PY  - 1975
UR  - https://ntrs.nasa.gov/citations/19750035293
ID  - 19750035293
ER  -