K. Anstey, H. Mack, and N. Cherbuin. The American Journal of Geriatric Psychiatry: Official Journal of the American Association for Geriatric Psychiatry, 17 (7):
542--555(July 2009)PMID: 19546653.
M. Kolp, P. Giorgini, и J. Mylopoulos. Eighth International Workshop on Agent Theories, Architectures, and Languages (ATAL-2001), Seattle, WA, (August 2001)