TY  - RPRT
TI  - Cardiotachometer with linear beat-to-beat frequency response
AU  - Deboo, G. J.
AU  - Pope, J. M.
AU  - Smith, D. B. D.
PY  - 1967
UR  - https://ntrs.nasa.gov/citations/19670000597
ID  - 19670000597
ER  -