TY  - RPRT
TI  - Radar attenuation tomography using the centroid frequency downshift method
AU  - L. Liu
AU  - J. W. Lane
AU  - Y. Quan
PY  - 1998
DO  - 10.1016/s0926-9851(98)00024-x
UR  - https://pubs.usgs.gov/publication/70020291
ID  - 70020291
ER  -