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Vierteljahrshefte zur Wirtschaftsforschung, Vol. 70 (2001), Iss. 4 : pp. 571–585 | First published online: October 03, 2017
Vierteljahrshefte zur Wirtschaftsforschung, Vol. 89 (2020), Iss. 1 : pp. 115–132 | First published online: March 25, 2020
