TY  - RPRT
TI  - Ultrasound Algorithm Derivation for Soil Moisture Content Estimation
AU  - Belisle, W.R.
AU  - Metzl, R.
AU  - Choi, J.
AU  - Aggarwal, M. D.
AU  - Coleman, T.
PY  - 1997
UR  - https://ntrs.nasa.gov/citations/20010000376
ID  - 20010000376
ER  -