TY  - RPRT
TI  - Crosswell seismic tomography at the USGS fractured rock research site data collection, data processing, and tomograms
AU  - K.J. Ellefson
AU  - J. E. Kibler
AU  - P. A. Hsieh
AU  - A.M. Shapiro
PY  - 1998
DO  - 10.3133/ofr98510
UR  - https://pubs.usgs.gov/publication/ofr98510
ID  - ofr98510
ER  -