1. [1] Hanks GW, Portenoy RK, MacDonald N, et al. Difficult pain problems. In: Doyle P, Hanks GWC, MacDonald N. eds. Oxford textbook of palliative medicine. Oxford: Oxford University Press 1993:257-62.
2. Ketamine-its pharmacology and therapeutic uses;White;Anaesthesiology,1982
3. [3] Mercadente S. Ketamine in cancer pain: an up-date. Palliative Medicine 1996;10(3):225-30.
4. [4] Fallon M, Welsh J. The role of ketamine in pain control. European J Palliat Care 1996;3(4):143-6.
5. Continuous subcutaneous administration of the NMDA receptor antagonist ketamine in the treatment of post-herpetic neuralgia;Eide;Pain,1995