Sharma, M. R., Grant, G. A., Nicoletto, H. A., Douville, C. M. and Newell, D. W. (2005) “Spontaneous Nonaneurysmal Subarachnoid Hemorrhage: Review of 75 Cases”, Nepal Journal of Neuroscience, 2(1), pp. 59–66. doi: 10.3126/njn.v2i1.19996.