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South African Medical Journal = Suid-Afrikaanse Tydskrif Vir Geneeskunde|June 21, 1986
'Locked-in' but not 'locked-out'. A case reportA S de Graaf, M D RybnikarClinical Neurology and Neurosurgery|January 1, 1992
Prevalence of a photoparoxysmal response in the electroencephalograms of epileptics in the three main ethnic groups of NamibiaA S de GraafSouth African Medical Journal = Suid-Afrikaanse Tydskrif Vir Geneeskunde|January 9, 1982
The spectrum of disease in weakness and wasting of the quadriceps muscles. Case reportsA S de Graaf, R H HewlettSouth African Medical Journal = Suid-Afrikaanse Tydskrif Vir Geneeskunde|April 4, 1987
Diagnostic problems of leptomeningeal lymphoma. A report of 3 casesJ Gardiner, A S de Graaf, R H HewlettSouth African Medical Journal = Suid-Afrikaanse Tydskrif Vir Geneeskunde|February 16, 1985
Standards for the assessment of visual evoked potentials in an ethnically heterogeneous adult populationA S de Graaf, C J Lombard, G L HartClinical Neurology and Neurosurgery|February 1, 1995
An early-onset recessive cerebellar disorder with distal amyotrophy and, in two patients, gross myoclonia: a probable ataxia telangiectasia variantA S de Graaf, G de Jong, W J KleijerEpilepsia|March 1, 1995
Influence of ethnic and geographic factors on the classic photoparoxysmal response in the electroencephalogram of epilepsy patientsA S de Graaf, C J Lombard, D A ClaassenScandinavian Journal of Rheumatology|January 1, 1978
Treatment of rheumatoid pachymeningitis involving the entire thoracic regionT Hauge, B Magnaes, A C Løken, et al.The Onderstepoort Journal of Veterinary Research|June 1, 1980
Occurrence of Taenia solium in a Cape fur seal (Arctocephalus pusillus)A S De Graaf, P D Shaughnessy, R M McCully, et al.Electroencephalography and Clinical Neurophysiology|November 1, 1980
Photoparoxysmal responses in the electroencephalograms of some ethnic groups of the Cape PeninsulaA S De Graaf, T J Van Wyk Kotze, D A ClaassenPageof 2