P. S. Miller

Secular changes among the Western Apache.

P. S. Miller, 1970, American journal of physical anthropology.

Mental dysfunction and the blockade of muscarinic receptors in the brains of the normal elderly

D. Keegan, J. Richardson, P. S. Miller, 1985, Progress in Neuro-Psychopharmacology and Biological Psychiatry.

Association of low serum anticholinergic levels and cognitive impairment in elderly presurgical patients.

M. Hiscock, D. Keegan, J. Richardson, 1988, The American journal of psychiatry.