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JUCS - Journal of Universal Computer Science 9(1): 51-85
doi:
10.3217/jucs-009-01-0051
Published:
28 Jan 2003
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Authors
Maria Virvou
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University of Piraeus, Piraeus, Greece
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Department of Informatics, University of Piraeus, Piraeus, Greece
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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.