Post, A., Ackl, N., Rücker, M., Schreiber, Y., Binder, E. B., Ising, M., Sonntag, A., Holsboer, F., & Almeida, O. F. (2006). Toward a reliable distinction between patients with mild cognitive impairment and Alzheimer-Type dementia versus major depression. Biological Psychiatry, 59, 858-862.