K. J. Reinikainen

Slowing of electroencephalogram and choline acetyltransferase activity in post mortem frontal cortex in definite Alzheimer's disease

H. Soininen, H. Soininen, E. Helkala, 1992, Neuroscience.

Cholinergic deficit in Alzheimer's disease: A study based on CSF and autopsy data

H. Soininen, H. Soininen, M. Laakso, 1988, Neurochemical Research.

Prevalence of age-associated memory impairment in a randomly selected population from eastern Finland

M. Laakso, M. Laakso, T. Hänninen, 1995, Neurology.