TY  - RPRT
TI  - A code generating self-calibrating seismic amplifier, with a section on crystal VCO center frequency stabilizer
AU  - John R. Van Schaack
AU  - E. Gray Jensen
PY  - 1980
DO  - 10.3133/ofr80387
UR  - https://pubs.usgs.gov/publication/ofr80387
ID  - ofr80387
ER  -