A $K$-functional and the rate of convergence of some linear polynomial operators
1996 ◽
Vol 124
(6)
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pp. 1773-1781
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2009 ◽
Vol 47
(1)
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pp. 440-466
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1994 ◽
Vol 78
(1)
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pp. 165-173
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1972 ◽
Vol 5
(2)
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pp. 176-198
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2000 ◽
Vol 19
(3)
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pp. 677-693
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1995 ◽
Vol 82
(2)
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pp. 441-459
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