By Ng Y.-K.   Yeh Y.-N.   in Economics Letters

ISSN:0165-1765|78|2|161-166

Elsevier‎(2003)‎

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By Hwang H.-K.   Yang B.-Y.   Yeh Y.-N.   in Theoretical Computer Science

ISSN:0304-3975|242|1|29-40

Elsevier‎(2000)‎

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By Hwang H.-.K.   Yeh Y.-.N.   in Advances in Applied Mathematics

ISSN:0196-8858|109|3|378-414

Academic Press‎(1997)‎

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