@book{ 0-585554544, title = {Immigration from outside Europe: chance or challenge for social security? ; Dimensions of a complex topic}, series = {ZeS-Arbeitspapier}, author = {Schmähl, Winfried}, editor = {Schmähl, Winfried}, address = {Bremen}, publisher = {ZeS}, year = {2008}, language = {English}, note = {Zsfassungen in dt. und engl. Sprache}, url = {http://www.zes.uni-bremen.de/xml/arbeitspapierDownload.php?ID=276&SPRACHE=DE&TYPE=PDF}, url = {https://katalog.gfzk.de/Record/0-585554544} }