On a conjecture about spectral sets
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2017 ◽
Vol 147
(5)
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pp. 917-933
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1972 ◽
Vol 168
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pp. 133
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1963 ◽
Vol 7
(1)
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pp. 64-90
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2003 ◽
Vol 11
(6)
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pp. 457-466
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1976 ◽
Vol 57
(1)
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pp. 99-99
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