Cotman, C. ., Geddes, J. ., Bridges, R. ., & Monaghan, D. . (1969). N-methyl-D-aspartate receptors and Alzheimer’s disease. Neurobiology of Aging, 10(5), 603-5; discussion 618. https://doi.org/10.1016/0197-4580(89)90144-9 (Original work published 1969)