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Hori, K., Tanaka, J., & Nomura, M. (1991). Age related changes in brain monoamine contents of rats during a reversal learning task determined by in vivo microdialysis. Neuroscience Research Supplements, 16, 159. doi:10.1016/0921-8696(91)91111-5 
10.1016/0921-8696(91)91111-5