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JUCS - Journal of Universal Computer Science 9(6): 520-529
doi:
10.3217/jucs-009-06-0520
Published:
28 Jun 2003
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Authors
Raphael Volz 
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FZI Research Center for Information, Technologies Karlsruhe, Karlsruhe, Germany
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FZI Research Center for Information, Technologies Karlsruhe, Karlsruhe, Germany
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FZI Research Center for Information, Technologies Karlsruhe, Karlsruhe, Germany
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Library + Documentation Systems Division, FAO of the UN, Rome, Italy
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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.