Update on Blepharospasm: Report from the BEBRF International WorkshopNeurol 71:1275-1282, Hallett,M.,et al, 2008
DystoniaNEJM 355:818-829, Tarsy,D. &Simon,D.K., 2006
The DystoniasBMJ 300:139-144, Marsden,C.D.&Quinn,N.P., 1990