TY  - RPRT
TI  - The optic disc in glaucoma. I: Classification.
AU  - R A Hitchings
AU  - G L Spaeth
PY  - 1976
DO  - 10.1136/bjo.60.11.778
UR  - https://pubmed.ncbi.nlm.nih.gov/1009058/
ID  - 1009058
ER  -