Primary researchers of this study are:
Deth, Jan W. van, Universität Mannheim, Germany
Tausendpfund, Markus, Universität Mannheim, Germany
Dataset: 1.0.0 (30.07.2014) doi:10.4232/1.12008
Access class: C - Data and documents are only released for academic research and teaching after the data depositor's written authorization. For this purpose the Data Archive obtains a written permission with specification of the user and the analysis intention.
More information is available at the data catalogue: study description.