@inbook{Hagestad2010,
author = {Hagestad, G.O. and Herlofson, K.},
title= {Aldring [Ageing]},
year = {2010},
editor = {Frønes, I.},
editor = {Kjølsrød, L.},
booktitle = {Det norske samfunn},
address = {Oslo},
publisher = {Gyldendal akademisk},
pages = {414--434},
}