1
Published: [1999]
Superior document: Contemporary mathematics, 245
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2
Published: [1995]
Superior document: Contemporary mathematics, 186
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3
Published: [2020]
Superior document: Title is part of eBook package: De Gruyter DG Ebook Package English 2020
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4
Published: [2012]
Superior document: Title is part of eBook package: De Gruyter DGBA Mathematics - 1990 - 1999
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