G. Graef

Primary leptomeningeal gliomatosis with predominant involvement of the spinal cord

K. Maier-Hauff, J. Iglesias, N. Heye, 2005, Acta Neurochirurgica.

Interhemispheric Subdural Empyema

G. Graef, 1978 .

Clinical experience with automatic midline echoencephalography: cooperative study of three neurosurgical clinics.

T. Grumme, E. Kazner, K. Hartmann, 1975, Journal of neurology, neurosurgery, and psychiatry.