Two-dot vernier discrimination within 2.0 degrees of the foveal center.
Groll S, Hirsch J. Two-dot vernier discrimination within 2.0 degrees of the foveal center. Journal Of The Optical Society Of America A 1987, 4: 1535-42. PMID: 3625334, DOI: 10.1364/josaa.4.001535.Peer-Reviewed Original Research