ZfKE – Zeitschrift für KMU und Entrepreneurship, Vol. 68 (2020), Iss. 1 : pp. 1–30 | First published online: August 07, 2020
Der Betriebswirt, Vol. 53 (2012), Iss. 3 : pp. 20–24 | First published online: July 02, 2019
