TY  - RPRT
TI  - Ear lobe photoplethysmography.
AU  - R M Stern
PY  - 1974
DO  - 10.1111/j.1469-8986.1974.tb00824.x
UR  - https://pubmed.ncbi.nlm.nih.gov/4810439/
ID  - 4810439
ER  -