@book{ 0-338076549, title = {HWWA discussion paper}, address = {Hamburg}, publisher = {Hamburgisches Welt-Wirtschafts-Archiv (HWWA)}, year = {1996}, language = {German}, language = {English}, note = {Gesehen am 23.03.12}, note = {Urh. bis 1999: HWWA-Institut für Wirtschaftsforschung}, url = {http://www.bibliothek.uni-regensburg.de/ezeit/?2063855}, url = {http://ageconsearch.umn.edu/handle/35448}, url = {http://www.econstor.eu/handle/10419/21}, url = {https://katalog.hgb-leipzig.de/Record/0-338076549} }