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JUCS - Journal of Universal Computer Science 19(11): 1638-1660
doi:
10.3217/jucs-019-11-1638
Received:
15 Dec 2012 | Approved:
28 May 2013 | Published:
01 Jun 2013
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Authors
Michalis Feidakis
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University of Aegean, Mytilini, Greece
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University of Aegean, Mytilini, Greece
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Open University of Catalonia, Barcelona, Spain
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Open University of Catalonia, Barcelona, Spain
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Open University of Catalonia, Barcelona, Spain
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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.