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A Sobolev-type upper bound for rates of approximation by linear combinations of Heaviside plane wavesPaul C. Kainen, Vera Kurkova, and Andrew Vogt. "A Sobolev-type upper bound for rates of approximation by linear combinations of Heaviside plane waves." J. of Approximation Theory 147.1 (2007): 1-10 . |
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