Johannes Elschner

On Spline Approximation for a Class of Non‐Compact Integral Equations

Asymptotics of Solutions to Pseudodifferential Equations of MELLIN Type

On Spline Approximation for Singular Integral Equations on an Interval

Über die normale Auflösbarkeit von entarteten gewöhnlichen Differentialoperatoren in Räumen differenzierbarer Funktionen

On Spline Approximation for a Class of Integral Equations II. Galerkin's Method with Smooth Splines

Über entartete gewöhnliche Differentialoperatoren und eine Klasse entarteter singulärer Integrodifferentialgleichungen

Über eine Klasse entarteter singulärer Integrodifferentialgleichungen I

On the Exponential Convergence of Spline Approximation Methods for Wiener-Hopf Equations

A Galerkin Method with Finite Elements for Degenerate One Dimensional Pseudodifferential Equations

On degenerate boundary value problems for elliptic differential operators of second order in the plane and the index of degenerate pseudo‐differential operators on a closed curve