TY  - RPRT
TI  - Fixation problems in fundus photography.
AU  - S S Hayreh
AU  - T J Ffytche
PY  - 1970
DO  - 10.1136/bjo.54.7.496
UR  - https://pubmed.ncbi.nlm.nih.gov/5433356/
ID  - 5433356
ER  -