Oliver N. , Oliver N., and Eberhard C. Kirsch. “Intramedullary Spinal Cord Tumours: A Clinical Outcome and Radiological Follow-up Study”. Swiss Medical Weekly 131, no. 3940 (October 6, 2001): 582–587. Accessed April 20, 2024. https://smw.ch/index.php/smw/article/view/3266.