Carpenter G.I, Hirdes J.P, Ribbe M.W, Ikegami N., Challis D., Steel K., Bernabei R., Fries B..  1999.  Targeting and quality of nursing home care. A five-nation study. Aging-Clinical & Experimental Research. 11(2):83-9.

Phillips C.D, Zimmerman D., Bernabei R., Jonsson P.V.  1997.  Using the Resident Assessment Instrument for quality enhancement in nursing homes. Age Ageing. 26 Suppl 2:77-81.