A strong-Riesz mean-value theorem with applications to summability factor theorems. W. Kratz; B.L.R. Shawyer — 1978 Journal für die reine und angewandte Mathematik
A numerical algorithm for the Stokes problem based on an integral equation for the pressure via conformal mappings. A. Peyerimhoff; W. Kratz Numerische Mathematik
Explicit Representations of Dirichlet Approximations. A. Peyerimhoff; W.B. Jurkat; W. Kratz — 1977 Mathematische Annalen
On Best Two-Dimensional Dirichlet-Approximations and their Algorithmic Calculation. A. Peyerimhoff; W. Kratz; W. Jurkat — 1979 Mathematische Annalen