@inbook{Uhlenberg1993,
author = {Uhlenberg, P.},
title= {Demographic change and kin relationships in later life},
year = {1993},
editor = {Maddox, G.L.},
editor = {Lawton, M.P.},
booktitle = {Annual Review of Gerontology and Geriatrics. Focus on kinship, aging, and social change},
address = {New York},
publisher = {Springer},
}