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London [u.a.]: Taylor & Francis, 2007
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Singapore [u.a.]: World Scientific, 1993
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Springer Science and Business Media LLC, 2018
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Springer Science and Business Media LLC, 1970
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JSTOR, 1967
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American Mathematical Society, 1967
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American Mathematical Society (AMS), 1967
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Springer Science and Business Media LLC, 2014