1. Department of Business and Economics, Berlin School of Economics and Law, 10825 Berlin, Germany
2. IMT Atlantique, LS2N, CNRS, La Chantrerie, 4, rue Alfred Kastler, 44300 Nantes, France
3. Saint Petersburg Institute for Informatics and Automation of the RAS (SPIIRAS), V.O. 14 line, 39 199178, St. Petersburg, Russia