@inbook{Kohli2005,
author = {Kohli, M. and Künemund, H. and Lüdicke, J.},
title= {Family structure, proximity and contact},
year = {2005},
editor = {Börsch-Supan, A.},
editor = {Brugiavini, A.},
editor = {Jürges, H.},
editor = {Siegrist, J.},
editor = {Weber, G.},
booktitle = {Health, ageing and retirement in Europe. First results from the Survey of Health, Ageing and Retirement in Europe},
address = {Mannheim},
publisher = {Mannheim Resarch Institute for the Economics of Aging},
pages = {164--170},
}