TY  - RPRT
TI  - Nongeometric Doppler stroke volume determination.
AU  - D H Spodick
AU  - H Koito
PY  - 1989
DO  - 10.1016/0002-9149(89)90067-2
UR  - https://pubmed.ncbi.nlm.nih.gov/2648790/
ID  - 2648790
ER  -