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JUCS - Journal of Universal Computer Science 13(7): 991-1001
doi:
10.3217/jucs-013-07-0991
Published:
28 Jul 2007
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Authors
Davinia Hernández-Leo
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University of Valladolid, Spain
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University of Duisburg-Essen, Duisburg, Germany
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University Carlos III of Madrid, Madrid, Spain
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University of Valladolid, Valladolid, Spain
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Open University of the Netherlands, Netherlands
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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.