Funding for this research was provided by:
Deutsche Forschungsgemeinschaft (AK35/2-1)
Deutsche Forschungsgemeinschaft (IGK Stochastics and real worls models)
Deutsche Forschungsgemeinschaft (CRC 701)
FP7 Ideas: European Research Council (307074)
Article History
Received: 6 October 2017
Accepted: 24 May 2018
First Online: 16 July 2018