Geddes, J., Chang-Chui, H., Cooper, S., Lott, I., & Cotman, C. (1986). Density and distribution of NMDA receptors in the human hippocampus in Alzheimer’s disease. Brain Research, 399(1), 156-61. https://doi.org/10.1016/0006-8993(86)90611-6 (Original work published 1986)