TY  - RPRT
TI  - A precision cardiotachometer and arrhythmia detector.
AU  - R G Clark
AU  - R W Meyer
PY  - 1969
DO  - 10.1152/jappl.1969.27.4.569
UR  - https://pubmed.ncbi.nlm.nih.gov/5822568/
ID  - 5822568
ER  -