ZfKE – Zeitschrift für KMU und Entrepreneurship, Vol. 59 (2011), Iss. 3 : pp. 149–167 | First published online: November 22, 2017
ZfKE – Zeitschrift für KMU und Entrepreneurship, Vol. 70 (2022), Iss. 3-4 : pp. 243–252 | First published online: March 17, 2023
