TY  - RPRT
TI  - Heart vector magnitude. A simple recording system.
AU  - B Olsson
AU  - L Brorson
AU  - K Skarvan
PY  - 1971
DO  - 10.1016/s0022-0736(71)80026-2
UR  - https://pubmed.ncbi.nlm.nih.gov/4258120/
ID  - 4258120
ER  -