TY - JOUR A1 - Broese van Groenou, M. A1 - Glaser, K. A1 - Tomassini, C. A1 - Jabcobs, T. T1 - Socio-economic status differences in older people's use of informal and formal help: A comparison of four European countries Y1 - 2006 DO - 10.1017/S0144686X06005241 JF - Ageing & Society VL - 26 IS - 5 SP - 745 EP - -766 ER -