TY  - RPRT
TI  - Use of the operating microscope. Adjustment and compensation for refractive errors.
AU  - T N Steffen
AU  - J C Urban
PY  - 1969
DO  - 10.1001/archotol.1969.00770030382022
UR  - https://pubmed.ncbi.nlm.nih.gov/5803672/
ID  - 5803672
ER  -