1
Published: 1955.
Superior document: Memoirs of the American Mathematical Society, number 17
2
Published: 1951.
Superior document: Memoirs of the American Mathematical Society ; number 3
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3
Published: 2012.
Superior document: Memoirs of the American Mathematical Society, Volume 224, Number 1054
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4
Published: [2019]
Superior document: Title is part of eBook package: De Gruyter DGBA Physical Sciences <1990
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