M. S. Shaik and R. K. Raju, “Anaesthetic management of excision of Olfactory Groove Meningioma by Bifrontal Craniotomy with Severe Mitral stenosis”, Int J of Adv in Sci Res, vol. 1, no. 4, pp. 214–216, May 2015, doi: 10.7439/ijasr.v1i4.2012.