Aetiology of Optic Neuritis
BMJ 2:265, , 1975
Diseases of the Nervous System Caused by Nutritional Deficiency, Vitamin B12 (Cobalamin) Deficiency (Subacute Combined Degeneration)
Adams & Victors Principles of Neurology Chp 41, pg 1172, Ropper, A.H.,et al, 2014
Neurologic Aspects of Cobalamin Deficiency
Medicine 70:229-245, Healton,E.B.,et al, 1991
Internuclear Ophthalmoplegia in Pernicious Anaemia
BMJ 297:1583, Kandler,R.H.&Davies-Jones,G.A.B., 1988