TY  - RPRT
TI  - A practical ultrasonic plethysmograph
AU  - Wu, V. C.
AU  - Nickell, W. T.
AU  - Bhagat, P. K.
PY  - 1982
UR  - https://ntrs.nasa.gov/citations/19820044951
ID  - 19820044951
ER  -