2Barnett GH, Miller DW, Weisenberger J. Frameless stereotaxy with scalp-applied fiducial markers for brain biopay procedures:experience in 218 cases. Neurosurg, 1999,91(6) :569-576.
3Femandes HM, Gregson B, Siddique S, et al. Surgery in intracerebral hemorrhage: the uncertainty continues. Stroke, 2000,31 (10) : 2511- 2516.