TY  - RPRT
TI  - Colorimetry by a new principle.
AU  - R D Gunkel
AU  - D G Cogan
PY  - 1978
DO  - 10.1001/archopht.1978.03910050193016
UR  - https://pubmed.ncbi.nlm.nih.gov/305241/
ID  - 305241
ER  -