TY  - RPRT
TI  - A vectorcardiograph for assessing implanted cardiac pacemakers.
AU  - D L Thomas
AU  - G D Green
PY  - 1974
DO  - 10.1007/bf02477220
UR  - https://pubmed.ncbi.nlm.nih.gov/4465581/
ID  - 4465581
ER  -