Hawes C., Mor V., Phillips C.D, Fries B.E, Morris J.N, Steele-Friedlob E., Greene A.M, Nennstiel M..  1997.  The OBRA-87 nursing home regulations and implementation of the Resident Assessment Instrument: effects on process quality.. Journal of the American Geriatrics Society. 45(8):977-85.

Mor V., Intrator O., Fries B.E, Phillips C., Teno J., Hiris J., Hawes C., Morris J..  1997.  Changes in hospitalization associated with introducing the Resident Assessment Instrument.. Journal of the American Geriatrics Society. 45(8):1002-10.