Baum EE, et al. (2003): Effectiveness of a group exercise program in a long-term care facility: a randomized pilot trial. J Am Med Dir Assoc, 4, 74-80.
Folstein MF, et al. (1975) : ′′Mini-mental state′′ . A practical method for grading the cognitive state of patients for the clinician. J Psychiatr Res, 12, 189-198.