By Gaur D.R.   Ibaraki T.   Krishnamurti R.   in Journal of Algorithms

ISSN:0196-6774|43|1|138-152

Academic Press‎(2002)‎

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By Czumaj A.   Gasieniec L.   Gaur D.R.   Krishnamurti R.   Rytter W.   Zito M.   in Theoretical Computer Science

ISSN:0304-3975|302|1|489-495

Elsevier‎(2003)‎

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