TY  - RPRT
TI  - A NEW PERIMETER FOR CENTRAL AND PERIPHERAL FIELDS.
AU  - D D DONALDSON
AU  - E W NORTON
PY  - 1963
DO  - 10.1001/archopht.1963.00960050450003
UR  - https://pubmed.ncbi.nlm.nih.gov/14078863/
ID  - 14078863
ER  -