TY  - RPRT
TI  - Time and frequency domain methods for heart rate variability analysis: a methodological comparison.
AU  - D A Litvack
AU  - T F Oberlander
AU  - L H Carney
AU  - J P Saul
PY  - 1995
DO  - 10.1111/j.1469-8986.1995.tb02101.x
UR  - https://pubmed.ncbi.nlm.nih.gov/7568644/
ID  - 7568644
ER  -