1. Chordom der Orbita;Daicker;Ophthalmologica,1978
2. Orbital Tumors;Henderson,1973
3. Tumors of the Eye;Reese,1976
4. Chordomas of ocular interest;Dyson;Arch. Ophthalmol.,1957
5. Ocular manifestations of two rare intracranial tumors (suprasellar cholesteatoma and parasellar chordoma);Nishigori;Folia Ophthalmol. Jpn.,1961