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Bourtchuladze; et al. "Deficient long-term memory in mice with a targeted mutation of the cAMP-responsive element-binding protein". Cell. 79 (1): 59–68. doi:10.1016/0092-8674(94)90400-6. PMID7923378. {{cite journal}}: Explicit use of et al. in: |last2= (help)