Bastola, P, et al. “The Role of the Injection Botulinum Toxin A in Cases of Essential Blepharospasm Syndrome, Hemifacial Spasm and Meige’s Syndrome”. Kathmandu University Medical Journal, vol. 8, no. 3, June 2012, pp. 305-10, doi:10.3126/kumj.v8i3.6217.