1. Alber J, Köhler U (2004) Health and care in an enlarged Europe. European Foundation for the improvement of living and working conditions, Office for official publications of the European Communities, Luxembourg. http://www.eurofound.europa.eu/publications/htmlfiles/ef03107.htm
2. Allen L, Perkins E (1995) The future of family care for older people. Her Majesty’s Stationary Office, London
3. Arber S, Ginn J (1995) Gender differences in the relationship between paid employment and informal care. Work Employ Soc 9(3):445–471
4. Campbell L, Martin-Matthews A (2000) Primary and proximate. The importance of coresidence and being primary provider of care for men’s filial care involvement. J Fam Issues 21(8):1006–1030
5. Comas-Herrera A, Wittenberg R (2003) European study of long-term care expenditure: report to the European Commission, employment and social affairs DG. PSSRU Discussion Paper 1840, http://ec.europa.eu/employment_social/soc-prot/healthcare/ltc_study_en.pdf