1.题目：Probable causes of recurrence in patients with chordoma and chondrosarcoma of the base of skull and cervical spine.
作者：Austin JP, Urie MM, Cardenosa G, Munzenrider JE.
2.题目：Chordomas and chondrosarcomas of the cranial base: results and follow-up of 60 patients.
作者：Gay E, Sekhar LN, Rubinstein E, Wright DC, Sen C, Janecka IP, Snyderman CH.
Department of Neurological Surgery, University Hospital of Grenoble (EG), France.
3.题目：Chondrosarcoma of bone: a statistical analysis of prognostic factors.
作者：Wang JW, Ger LP, Shih CH, Hsieh MC.
Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taipei, Taiwan, R.O.C.
