Casten R., Lawton M.P, Parmelee P.A, Kleban M.H.  1998.  Psychometric characteristics of the minimum data set I: confirmatory factor analysis. Journal of the American Geriatrics Society. 46(6):726-35.

Lawton M.P, Casten R., Parmelee P.A, Van Haitsma K., Corn J., Kleban M.H.  1998.  Psychometric characteristics of the minimum data set II: validity. Journal of the American Geriatrics Society. 46(6):736-44.