[1] Tech Univ Appl Sci Wildau, Fac Business Comp & Law, Hochschulring 1, Wildau D-15745, Germany
[2] Fraunhofer Ctr Int Management & Knowledge Econ IMW, Innovat Policy & Transfer Design Unit, Martin Luther Ring 13, D-04109 Leipzig, Germany
[3] Univ Leipzig, Fac Econ & Management Sci, Grimmaische Str 12, D-15745 Leipzig, Germany