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JUCS - Journal of Universal Computer Science 21(12): 1635-1653
doi:
10.3217/jucs-021-12-1635
Received:
17 Oct 2012 | Approved:
29 Sep 2015 | Published:
01 Dec 2015
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Authors
Jim Scullion 
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University of the West of Scotland, Ayr, United Kingdom
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University of the West of Scotland, Paisley, United Kingdom
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University of the West of Scotland, Paisley, United Kingdom
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Conflict of interest
The authors have declared that no competing interests exist.
This article is freely available under the J.UCS Open Content License.