1. Primary craniofacial chordoma;Gormley;Neurosurgery,1995
2. Argaud, Gorse, Calmette. Chordome intraorbitaire chez un enfant de 3 ans. Ann Anat Pathol 1937;14:419–422.
3. Orbital tumors;Henderson,1994
4. Ocular manifestations of intracranial chordomas;Bagan;Tr Am Ophthalmol Soc,1980
5. MRI of intracranial chordomas. Extent of tumor and contrast enhancement;Doucet;Neuroradiology,1997