Data Documentation 28, 44 S.
Jan Goebel, Peter Krause, Rainer Pischner, Ingo Sieber, Gert G. Wagner
2008
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DOI:
https://dx.doi.org/10.18723/diw_ddc:2008-28
Frei zugängliche Version: (econstor)
http://hdl.handle.net/10419/129234
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