TY  - RPRT
TI  - Modern instruments for subjective refraction. A comparative study.
AU  - W Wesemann
AU  - B Rassow
PY  - 1986
DO  - 10.1016/s0161-6420(86)33586-3
UR  - https://pubmed.ncbi.nlm.nih.gov/3808640/
ID  - 3808640
ER  -