1. Arjona V, Meinos J, Linares J, Aguilar D, Diaz-Flores L (1977) Sarcomatoid transformation of the vascular walls in giant cell glioblastoma. Morfol Norm Patol (Buchar) 1: 391?399
2. Banerjee AK, Sharma BS, Kak VK, Ghatak NR (1989). Gliosarcoma with cartilage formation. Cancer 63: 518?523
3. Barnard RO, Bradford R, Scott T, Thomas DDT (1986). Gliomyosarcoma. Report of a case of rhabdomyosarcoma arising in a malignant glioma. Acta Neuropathol (Berl) 69: 23?27
4. Diaz-Flores L, Caballero T, Sandrez G, Aguilar D, Mantos S (1979). Nature and histogenesis of the sarcomatous component in mixed sarcoma-glioma forms. Morfol Norm Patol (Buchar) 3: 253?264
5. Feigin I, Gross SW (1955) Sarcoma arising in glioblastoma of the brain. Am J Pathol 31: 633?653