1. Argonin, Marc E. Dementia Defined. In: Carlat, Daniel J, editor. Practical guides in psychiatry-dementia. Philadelphia: Lippincott Williams & Wilkins; 2004. p. 2-14.
2. Kraemer HC, Taylor JL, Tinklenberg JR, Yesavage JA. The stages of Alzheimer's disease: a reappraisal. Dementia & Geriatric Cognitive Disorders 1998; 9(6)299-308.
3. Crutch SJ, Isaacs R and MN Rossor. Some workmen can blame their tools: artistic change in an individual with Alzheimer's disease. Lancet 2001; 357: 2129-33.
4. As well as the New York Times article you may find the following accounts of his work and exhibitions interesting: http://www.galerie-beckel-odille-boicos.fr/artistes/Utermohlen/page_anglais_utermohlen.htm http://www.news.harvard.edu/gazette/2005/10.20/11-alz.html http://news.bbc.co.uk/1/hi/health/1412428.stm http://www.canada.com/ottawacitizen/features/alzheimers/story.html?id=abc81e35-40fc-49c7-a435-f4ce8d5aa1a5&k=58772