Siwak-Tapp, C. T., Head, E., Muggenburg, B. A., Milgram, N. W., & Cotman, C. W. (2006). Region specific neuron loss in the aged canine hippocampus is reduced by enrichment.

Siwak-Tapp, Christina T., Elizabeth Head, Bruce A. Muggenburg, Norton W. Milgram, ja Carl W. Cotman. Region Specific Neuron Loss in the Aged Canine Hippocampus Is Reduced By Enrichment. 2006.

Siwak-Tapp, Christina T., et al. Region Specific Neuron Loss in the Aged Canine Hippocampus Is Reduced By Enrichment. 2006.