TY  - RPRT
TI  - Obtaining changes in calibration-coil to seismometer output constants using sine waves
AU  - Adam T. Ringler
AU  - Charles R. Hutt
AU  - Lind S. Gee
AU  - Leo D. Sandoval
AU  - David C. Wilson
PY  - 2013
DO  - 10.1785/0120130128
UR  - https://pubs.usgs.gov/publication/70125466
ID  - 70125466
ER  -