TY  - RPRT
TI  - Did Einthoven invent a string galvanometer?
AU  - H B Burchell
PY  - 1987
DO  - 10.1136/hrt.57.2.190
UR  - https://pubmed.ncbi.nlm.nih.gov/3545272/
ID  - 3545272
ER  -