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JUCS - Journal of Universal Computer Science 7(3): 211-225
doi:
10.3217/jucs-007-03-0211
Published:
28 Mar 2001
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Authors
Kanji Akahori
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Tokyo Institute of Technology, Tokyo, Japan
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National Institute of Educational Policy Research, Japan
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Iwate Prefectures University, Japan
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Jyoetu University of Education, Japan
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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.