[1] Brandenburg Tech Univ Cottbus, Inst Business & Econ, Pl Deutsch Einheit 1, D-03046 Cottbus, Germany
[2] Indiana Univ, Sch Publ & Environm Affairs, Inst Dev Strategies, 1315 East 10th St, Bloomington, IN 47405 USA
[3] Univ Wuppertal, Schumpeter Sch Business & Econ, Gaussstr 20, D-42119 Wuppertal, Germany
[4] Univ Wuppertal, Jackstadt Ctr Entrepreneurship & Innovat Res, Gaussstr 20, D-42119 Wuppertal, Germany
[5] Univ Norte, Dept Econ, Km 5 Via Puerto Colombia, Barranquilla, Colombia
[6] Inst Mittelstandsforsch IfM Bonn, Maximilianstr 20, D-53111 Bonn, Germany
[7] Univ Rosario, Fac Econ, Calle 12c 4-59, Bogota, Colombia
[8] Univ Los Andes, Sch Management, Calle 21 1-20,SD 933, Bogota, Colombia