1
Published: 2018.
Superior document: Contemporary mathematics ; Volume 713
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2
Published: [1999]
Superior document: Contemporary mathematics, 248
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3
Published: 2012.
Superior document: Nankai series in pure, applied mathematics and theoretical physics ; v. 8
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4
Published: [2011]
Superior document: Title is part of eBook package: De Gruyter DGBA Mathematics - 1990 - 1999
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