TY  - RPRT
TI  - Slit-beam ruler.
AU  - M A Callahan
AU  - S J Kimura
PY  - 1976
DO  - 10.1016/0002-9394(76)90372-x
UR  - https://pubmed.ncbi.nlm.nih.gov/937439/
ID  - 937439
ER  -