TY  - RPRT
TI  - Automated perimetry: background, instruments and methods.
AU  - G L Portney
AU  - M A Krohn
DO  - 10.1016/0039-6257(78)90073-5
UR  - https://pubmed.ncbi.nlm.nih.gov/635771/
ID  - 635771
ER  -