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JUCS - Journal of Universal Computer Science 12(6): 710-724
doi:
10.3217/jucs-012-06-0710
Published:
28 Jun 2006
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Author
Beate Bollig
- Corresponding author
University Dortmund, Germany
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Conflict of interest
The author has declared that no competing interests exist.
This article is freely available under the J.UCS Open Content License.