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JUCS - Journal of Universal Computer Science 18(16): 2252-2273
doi:
10.3217/jucs-018-16-2252
Received:
10 Jan 2012 | Approved:
11 Jun 2012 | Published:
01 Feb 2012
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Authors
David Griffiths
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Institute of Educational Cybernetics, Bolton, United Kingdom
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University of Bolton, Bolton, United Kingdom
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University of Bolton, Bolton, United Kingdom
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The University of Bolton, Bolton, United Kingdom
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The University of Bolton, Bolton, 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.