Comments on a collocation spectral solver for the Helmholtz equation
The authors comment on a simple extension of a spectral-collocation Helmholtz solver due to \textit{U. Ehrenstein} and \textit{R. Peyret} [Int. J. Numer. Methods Fluids 9, No. 4, 427-452 (1989; Zbl 0665.76107)]. In contrast to Ehrenstein and Peyret the authors derive the more general case of non-homogeneous, Robin boundary conditions.
scientific article; zbMATH DE number 947679