scientific article; zbMATH DE number 3633015
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Publication:4193848
zbMath0407.35062MaRDI QIDQ4193848
Publication date: 1978
Title: zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Estimates of eigenvalues in context of PDEs (35P15) Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation (35J05) Representations of solutions to partial differential equations (35C99)
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