1. Die Krankhaften Geschwulste;Virchow, R.,1864
2. A peculiar glioma (neuroepithelioma?) of the retina. Bulljohns Hopk Hosp 1891; 2;Flexner, S.
3. Das Neuroepithelioma retinae: eine anatomische und klinische Studie;Wintersteiner, H.,1897
4. Minutes of the proceedings of the sixty-second annual meeting;Verhoeff, F.H.; Jackson, E.;Trans Am Ophthalmol Soc,1926
5. A classification of tumors of the glioma group on a histologic basis with a correlated study of prognosis;Bailey, P.; Cushing, H.,1926