@inbook{Ajrouch2007,
author = {Ajrouch, K. and Akiyama, H. and Antonucci, T.C.},
title= {Cohort differences in social relations among the elderly},
year = {2007},
editor = {Wahl, H.-W.},
editor = {Tesch-Roemer, C.},
editor = {Hoff, A.},
booktitle = {New Dynamics in old age: Individual, environmental and societal perspectives},
address = {New York},
publisher = {Baywood, Amityville},
pages = {43--63},
}