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JUCS - Journal of Universal Computer Science 14(22): 3627-3647
doi:
10.3217/jucs-014-22-3627
Published:
28 Dec 2008
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Authors
Adriana J. Berlanga
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Open Universiteit Nederland, Heerlen, Netherlands
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University of Salamanca, Salamanca, 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.