TY  - RPRT
TI  - [Approximate entropy and its application in heart rate variability analysis].
AU  - H G Gu
AU  - W Ren
AU  - G Liu
AU  - X Y Shen
AU  - J R Meng
PY  - 2000
UR  - https://pubmed.ncbi.nlm.nih.gov/11767785/
ID  - 11767785
ER  -