1
Published: 1993
Superior document: Preprint series / Department of Mathematics, Toyama University 63
2
Published: 2013.
Superior document: Nankai series in pure, applied mathematics and theoretical phyics ; v. 10
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3
Published: [2011]
Superior document: Title is part of eBook package: De Gruyter DGBA Mathematics - 1990 - 1999
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