TY  - RPRT
TI  - High frequency oscillators with adjustable waveforms: practical aspects.
AU  - L Freitag
AU  - M Schroer
AU  - J Bremme
PY  - 1989
DO  - 10.1093/bja/63.7.38
UR  - https://pubmed.ncbi.nlm.nih.gov/2692681/
ID  - 2692681
ER  -