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JUCS - Journal of Universal Computer Science 8(2): 348-362
doi:
10.3217/jucs-008-02-0348
Published:
28 Feb 2002
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Author
Ludwig Staiger
- Corresponding author
Martin-Luther-University Halle-Wittenberg, Wittenberg, 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.