A limiting absorption principle for the Helmholtz equation with variable coefficients
A Sparse Grid Discretization of the Helmholtz Equation with Variable Coefficients in High Dimensions
2016 ◽
Vol 54
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pp. 2707-2727
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2010 ◽
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pp. 1458-1489
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pp. 342-374
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1996 ◽
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pp. 85-89
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