1. Levin VA, Uhm JH, Jaeckle KA, et al, Phase III randomized study of postradiotherapy chemotherapy with alpha-difluoromethylornithine-procarbazine, N-(2-chloroethyl)-N′-cyclohexyl-N-nitrosurea, vincristine (DFMO-PCV) versus PCV for glioblastoma multiforme Clin Cancer Res 6:3878–3884, 2000
2. Levin VA, Leibel SA, Gutin PH, Neoplasms of the central nervous system in DeVita VTJ, Hellman S, Rosenberg SA, (eds): Cancer: Principles and Practice of Oncology ed 6 Lippincott-Raven Philadelphia 2001, pp 2100–2160
3. Rao JS, Yamamoto M, Mohaman S, et al., Expression and localization of 92 kDa type IV collagenase/gelatinase B (MMP−9) in human gliomas Clin Exp Metastasis 14: 12–18, 1996
4. Sawaya RE, Yamamoto M, Gokaslan ZL, et al, Expression and localization of 72 kDa type IV collagenase (MMP−2) in human malignant gliomas in vivo Clin Exp Metastasis 14:35–42, 1996
5. Rao JS, Molecular mechanisms of glioma invasiveness: the role of proteases Nat Rev Cancer 3:489–501, 2003