@inbook{De Jong Gierveld2006,
author = {De Jong Gierveld, J. and Van Tilburg, T. and Dykstra, P.A.},
title= {Loneliness and social isolation},
year = {2006},
editor = {Vangelisti, A.L.},
editor = {Perlman, D. },
booktitle = {Cambridge handbook of personal relationships},
address = {Cambridge},
publisher = {Cambridge University Press},
pages = {485--500},
}