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Graven-Nielsen, T; และคณะ (1999). "Ketamine reduces muscle pain, temporal summation, and referred pain in fibromyalgia patients". Pain. 85 (3): 483–491. doi:10.1016/S0304-3959(99)00308-5. PMID10781923.
Witting N, Svensson P, Gottrup H, Arendt-Nielsen L, Jensen TS (2000). "Intramuscular and intradermal injection of capsaicin: a comparison of local and referred pain". Pain. 84 (2–3): 407–12. doi:10.1016/S0304-3959(99)00231-6. PMID10666547.
Kosek E, Hansson P (2003). "Perceptual integration of intramuscular electrical stimulation in the focal and the referred pain area in healthy humans". Pain. 105 (1–2): 125–31. doi:10.1016/S0304-3959(03)00171-4. PMID14499428.
Vilayanur S. Ramachandran (1994). "Phantom limbs, neglect syndromes, repressed memories, and Freudian psychology". International Review of Neurobiology. 37: 291–333, discussion 369-372. doi:10.1016/s0074-7742(08)60254-8. PMID7883483.
Graven-Nielsen, T; และคณะ (1999). "Ketamine reduces muscle pain, temporal summation, and referred pain in fibromyalgia patients". Pain. 85 (3): 483–491. doi:10.1016/S0304-3959(99)00308-5. PMID10781923.