Butterfield, D. ., Hensley, K. ., Hall, N. ., Umhauer, S. ., & Carney, J. . (1993). Interaction of tacrine and velnacrine with neocortical synaptosomal membranes: relevance to Alzheimer’s disease. Neurochemical Research, 18(9), 989-94. https://doi.org/10.1007/BF00966758