TY  - RPRT
TI  - A rapid method for frontal plane axis determination in scalar electrocardiograms.
AU  - S Laiken
AU  - N Laiken
AU  - R A O'Rourke
AU  - J S Karliner
PY  - 1973
DO  - 10.1016/0002-8703(73)90167-1
UR  - https://pubmed.ncbi.nlm.nih.gov/4266821/
ID  - 4266821
ER  -