1. Special Eurobarometer 283: Health and Long Term Care in the European Union,2007
2. Caregiver Assessment: Principles, Guidelines, and Strategies for Change,2006
3. Pflegestatistik 2013,2015
4. The Long-Term Care System for the Elderly in Belgium;Willemé,2010
5. Zorg en Ondersteuning in Nederland: Kerncijfers 2014;Putman,2014