TY  - RPRT
TI  - Photoplethysmograph from a laser source.
AU  - L G Lindberg
AU  - P A Oberg
PY  - 1992
DO  - 10.1007/bf02457840
UR  - https://pubmed.ncbi.nlm.nih.gov/1293451/
ID  - 1293451
ER  -