4[1]Germano M, Villalobos H, Silvers A, et al. Clinical use of the optical digitizer for intracranial neuronavigation [ J ]. Neurosurgery, 1999, 45: 261-270.
5Hopf NJ,Pemeczky A.Endoscopic neuosurgery and endoscope - assisted microneursurgery for the treatment of intracranial cysts[J].Neurosurgery,1998,43 (6):1330~1337.