Rantz M.J, Popejoy L., Petroski G.F, Madsen R.W, Mehr D.R, Zwygart-Stauffacher M., Hicks L.L, Grando V., Wipke-Tevis D.D, Bostick J. et al..  2001.  Randomized clinical trial of a quality improvement intervention in nursing homes. Gerontologist. 41(4):525-38.

Rantz M.J, Petroski G.F, Madsen R.W, Mehr D.R, Popejoy L., Hicks L.L, Porter R., Zwygart-Stauffacher M., Grando V..  2000.  Setting thresholds for quality indicators derived from MDS data for nursing home quality improvement reports: an update. Joint Commission Journal on Quality Improvement. 26(2):101-10.