TY  - RPRT
TI  - Electronic flicker apparatus with automatic frequency variation.
AU  - C BERGER
AU  - A MAHNEKE
AU  - O MORTENSEN
PY  - 1955
DO  - 10.1364/josa.45.000307
UR  - https://pubmed.ncbi.nlm.nih.gov/14368414/
ID  - 14368414
ER  -