Carrillo E., Garcia-Altes A, Portella E, Mediano C, Fries B.E., Martinez F, Burgueno A, Valles E, Estrem M, Zahonero J.L.Martinez.  1996.  Sistema de clasificacion de pacientes en centros de media y larga estancia: los Resource Utilization Groups Version III. [Spanish]. Validacion en Espana Rev Gerontol. 6:276-284.

Fries B.E..  1997.  Changing the technology of assessing the elderly: the example of the RAI.. Generations. Spring(XXI):59-61.

Fries B.E., Morris J.N., Skarupski K.A.  1998.  Facility report cards and the ecological fallacy.. Canadian Journal of Quality in Health Care. 14(2):18-22.

Hirdes J., Fries B.E., Morris J.N., Ikegami N., Zimmerman D., Dalby D.M, Aliaga P., Hammer S., Jones R..  2001.  interRAI Home Care Quality Indicators (HCQIs) for MDS-HC Version 2.0.. 

Ljunggren G., Fries B.E., Winblad B..  1992.  International validation and reliability testing of a patient classification system for long-term care.. European Journal of Gerontology. 1(6):372-383.

Martin L., Hirdes J.P., Fries B.E..  2007.  Examining the Characteristics of Persons with Intellectual Disability Receiving Hospital Services: Part 2 - Complex Continuing Care Hospitals/Units. Journal on Developmental Disabilities. 13(3):105-117.

Mehr D.R, Fries B.E..  1995.  Response to impact of dementia special care units: resource use and outcomes.. The Gerontologist. 35(5):581-582.

Phillips C.D., Morris J.N., Hawes C., Mor V., Fries B.E., Murphy K..  1997.  The impact of RAI on ADLs, continence, communication, cognition and psychosocial status.. Journal of the American Geriatrics Society. 45(8):986-993.

Skarupski K.A, Fries B.E., Morris J.N., Ribbe M, Schroll M., Blaum C..  2000.  Age differences in ADL and cognition at nursing home admission.. Journal of Applied Gerontology. 

Voelkl J.E, Galecki A.T., Fries B.E..  1996.  Nursing home residents with severe cognitive impairments: predictors of participation in activity groups.. Therapeutic Recreation Journal. (First Quarter):27-40.