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JUCS - Journal of Universal Computer Science 23(9): 932-951
doi:
10.3217/jucs-023-09-0932
Received:
31 Jul 2017 | Approved:
26 Sep 2017 | Published:
28 Sep 2017
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Author
Rebekka Alm 
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Universität Rostock and Fraunhofer IGD, Rostock, Germany
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Conflict of interest
The author has declared that no competing interests exist.
This article is freely available under the J.UCS Open Content License.