Carpenter G.I, Ikegami N., Ljunggren G., Carrillo E., Fries B.E.  1997.  RUG-III and resource allocation: comparing the relationship of direct care time with patient characteristics in five countries. Age & Ageing. 26(Suppl 2):61-5.

Fries B.E, Marathe V.P.  1981.  Determination of optimal variable-sized multiple-block appointment systems. Operations Research. 29(2):324-45.

Fries B.E, Morris J.N, Skarupski K.A, Blaum C.S, Galecki A., Bookstein F., Ribbe M..  2000.  Accelerated dysfunction among the very oldest-old in nursing homes. Journals of Gerontology Series A-Biological Sciences & Medical Sciences. 55(6):M336-41.

Mehr D.R, Williams B.C, Fries B.E.  1997.  Predicting discharge outcomes of VA nursing home residents. Journal of Aging & Health. 9(2):244-65.

Phillips C.D, Hawes C., Fries B.E.  1993.  Reducing the use of physical restraints in nursing homes: will it increase costs? American Journal of Public Health. 83(3):342-8.

Reilly T.A, Marathe V.P, Fries B.E.  1978.  A delay-scheduling model for patients using a walk-in clinic. Journal of Medical Systems. 2(4):303-13.

Resnick H.E, Fries B.E, Verbrugge L.M.  1997.  Windows to their world: the effect of sensory impairments on social engagement and activity time in nursing home residents. Journals of Gerontology Series B-Psychological Sciences & Social Sciences. 52(3):S135-44.

Voelkl J.E, Fries B.E, Galecki A.T.  1995.  Predictors of nursing home residents' participation in activity programs. Gerontologist. 35(1):44-51.