Öztürk, Cemal
Pickel, Gert
Funding for this research was provided by:
Bundesministerium für Bildung und Forschung (01UG2032A)
Universität Duisburg-Essen
Article History
Received: 6 April 2021
Revised: 10 August 2021
Accepted: 30 August 2021
First Online: 29 September 2021