TY  - RPRT
TI  - Evaluating time-varying heart-rate variability power spectral density.
AU  - M Cesarelli
AU  - P Bifulco
AU  - M Bracale
DO  - 10.1109/51.637120
UR  - https://pubmed.ncbi.nlm.nih.gov/9399089/
ID  - 9399089
ER  -