@article{Tomassini2004,
author = {Tomassini, C. and Kalogirou, S. and Grundy, E. and Fokkema, T. and Martikainen, P. and Van Groenou, M.B. and Karisto, A.},
title= {Contacts between elderly parents and their children in four European countries: current patterns and future prospects},
year = {2004},
doi = {10.1007/s10433-004-0003-4},
volume = {1},
number = {1},
pages = {54--63},
}