Multiple Ring-Enhancing Lesions of the BrainJ Postgrad Med 56:307-316, Garg, R.K. & Sinha, M.K., 2010
Non Ischaemic Causes of Lacunar Syndromes:Prevalence and Clinical FindingsJNNP 52:1188-1190, Anzalone,N.&Landi,G., 1989