TY  - RPRT
TI  - An ear oximeter using D-C. Operational amplifiers.
AU  - W Paul
AU  - C R Woolf
PY  - 1967
DO  - 10.1139/y67-118
UR  - https://pubmed.ncbi.nlm.nih.gov/6064048/
ID  - 6064048
ER  -