1. Joint Commission on Accreditation of Healthcare Organisations (JCAHO). Primer on Indicator Development and Application. Measuring Quality in Health Care. The Joint Commission on Accreditation of Healthcare Organization (Hrsg.). Illinois: Oakbrook Terrace; 1990.
2. Schrappe M. Indikatoren, in: Lauterbach KW, Schrappe M. Gesundheitsökonomie, Qualitätsmanagement und Evidenced-based Medicine. Eine systematische Einführung, Stuttgart 2001.
3. Ensuring health care quality: an AHCPR perspective. Agency for Health Care Policy and Research;Clancy;Clin Ther,1997
4. Selecting Common Measures of Quality and System Performance;McGlynn;Medical Care,2003