TY  - RPRT
TI  - Moment-tensor solutions estimated using optimal filter theory: global seismicity, 1990
AU  - S.A. Sipkin
AU  - R.E. Needham
PY  - 1992
DO  - 10.1016/0031-9201(92)90157-q
UR  - https://pubs.usgs.gov/publication/70017269
ID  - 70017269
ER  -