1. Cranium bifidum and cranial cephaloceles;McLaurin,1977
2. A morphologic classification of sincipital encephalomeningoceles;Suwanwela;J Neurosurg,1972
3. Zür therapieproblematik bei sphenoethmoidalen meningozelen;Gerhardt;Zentralbl Neurochir,1979
4. Midline fusion defects and defects of formation;French,1982
5. Neurosurgery of infancy and childhood;Matson,1969