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ISSN:0020-7748|38|2|641-651

Springer Publishing Company ‎(1999)‎

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By Ripper P.S.   Fontoura M.F.   Neto A.M.   de Lucena C.J.P.   in World Wide Web

ISSN:1386-145X|3|1|43-52

Springer Publishing Company ‎(2000)‎

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