Three-point finite-difference schemes, Padé and the spectral Galerkin method. I. One-sided impedance approximation.

Vladimir Druskin Shari Moskow Three-point finite-difference schemes, Padé and the spectral Galerkin method. I. One-sided impedance approximation. 995-1019 2002 71 Math. Comput. 239 db/journals/moc/moc71.html#DruskinM02