Approximative Properties of the Threeharmonic Poisson Integrals on the Hölder Classes
2018 ◽
Vol 50
(8)
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pp. 77-86
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2017 ◽
Vol 69
(7)
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pp. 1075-1084
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2004 ◽
Vol 120
(5)
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pp. 1791-1802
1981 ◽
Vol 38
(2)
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pp. 151-173
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