Data Documentation 99, 12 S.
Tobias Gebel, Katja Buro, Peter Löwe, Thomas Pilger, Holger Piper, Katharina Zschuppe
2019
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DOI:
https://dx.doi.org/10.18723/diw_ddc:2019-99
Frei zugängliche Version: (econstor)
http://hdl.handle.net/10419/197987
This paper is distributed under the terms of the Creative Commons Attribution 4.0 International License (CC-BY-4.0): https://creativecommons.org/licenses/by/4.0/