RT Journal Article SR Electronic T1 Documenta Ophthalmologica Proceedings Series 31. Techniques in Clinical Electrophysiology of Vision JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 402 OP 403 DO 10.1136/bjo.67.6.402-b VO 67 IS 6 A1 J. H. Kelsey YR 1983 UL http://bjo.bmj.com/content/67/6/402.3.abstract AB