TY  - RPRT
TI  - Measuring baseline-treatment differences in heart rate variability: variance versus successive difference mean square and beats per minute versus interbeat intervals.
AU  - R J Heslegrave
AU  - J C Ogilvie
AU  - J J Furedy
PY  - 1979
DO  - 10.1111/j.1469-8986.1979.tb01461.x
UR  - https://pubmed.ncbi.nlm.nih.gov/424498/
ID  - 424498
ER  -