@book { Heinze2006,
title = {Wohnen im Alter : Trendreport ; Seniorenwirtschaft in Deutschland },
author = {Heinze, Rolf G. and Naegele, Gerhard and Hilbert, Josef },
pages = {29 },
year = {2006 },
url = {http://nbn-resolving.de/urn:nbn:de:0168-ssoar-121189 },
}