TY  - RPRT
TI  - Laser beat frequency spectroscopy.
AU  - M J French
AU  - J C Angus
AU  - A G Walton
PY  - 1969
DO  - 10.1126/science.163.3865.345
UR  - https://pubmed.ncbi.nlm.nih.gov/5762772/
ID  - 5762772
ER  -