1. A classification of tumours of the glioma group;Bailey,1927
2. A simplified classification of the gliomas;Kernohan;Proc Staff Meetings Mayo Clinic,1949
3. Grading of gliomas;Ringertz;Acta Pathol Microbiol Scand,1950
4. Histological typing of tumours of the central nervous system,1979
5. Histological typing of tumours of the central nervous system,1993