TY  - RPRT
TI  - A truly three-dimensional vectorcardiographic display.
AU  - V Kalff
AU  - W J Perkins
AU  - D J Dewhurst
AU  - E R Trethewie
PY  - 1974
DO  - 10.1016/0010-4825(74)90015-8
UR  - https://pubmed.ncbi.nlm.nih.gov/4455434/
ID  - 4455434
ER  -