Al-Hajjaji, Mustafa
Thüm, Thomas
Lochau, Malte
Meinicke, Jens
Saake, Gunter
Funding for this research was provided by:
The German Research Foundation (01IS14017A, 01IS14017B)
The German Research Foundation (DFG SA 465/34-2)
Article History
Received: 30 July 2015
Revised: 21 September 2016
Accepted: 11 November 2016
First Online: 17 December 2016