1. Anderson, J. and Gerbing, D. (1984) The effect of sampling error on convergence, improper solutions, and goodness-of-fit indices for maximum likelihood confirmator factor analysis Psychometrika, 49, pp. 155 - 173.
2. Andrieu, S. and Reynish, E. and Nourhashemi, F. and Shakespeare, A. and Moulias, S. and Ousset, P. and (2002) Predictive factors of acute hospitalization in 134 patients with Alzheimer's disease: A one year prospective study International Journal of Geriatric Psychiatry, 17(5), pp. 422 - 426.
3. Baltes, M. and Maas, I. and Wilms, H. and Borchelt, M.(1996) Alltagskompetenz im Alter: Theoretische Ueberlegungen und empirische Befunde. In Die Berliner Altersstudie. ( pp. 525 - 542 ). Berlin : Akademie Verlag.
4. Baltes, M. and Mayr, U. and Borchelt, M. and Maas, I. and Wilms, H. (1993) Everyday competence in old and very old age: An interdisciplinary perspective Ageing and Society, 13, pp. 657 - 680.
5. Cahn, D. and Sullivan, E. and Shear, P. and Pfefferbaum, A. and Heit, G. and Silverberg, G. (1998) Differential contributions of cognitive and motor component processes to physical and instrumental activities of daily living in Parkinson's disease Archives of Clinical Neuropsychology, 13, pp. 575 - 583.