TY  - RPRT
TI  - The reflex optical plotter. A preliminary report.
AU  - G W Butcher
AU  - C D Stephens
PY  - 1981
DO  - 10.1038/sj.bdj.4804688
UR  - https://pubmed.ncbi.nlm.nih.gov/6945116/
ID  - 6945116
ER  -