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JUCS - Journal of Universal Computer Science 19(12): 1834-1853
doi:
10.3217/jucs-019-12-1834
Received:
20 Sep 2012 | Approved:
10 May 2013 | Published:
28 Jun 2013
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Authors
Balazs Hidasi 
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Gravity R&D, Budapest, Hungary
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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.