A quaternionic treatment of Navier-Stokes equations Gürlebeck, Klaus; Sprössig, Wolfgang — 1990 Proceedings of the Winter School "Geometry and Physics"
An application of quaternionic analysis to the solution of time-independent Maxwell equations and of Stokes’ equation Gürlebeck, Klaus; Sprössig, Wolfgang — 1987 Proceedings of the 14th Winter School on Abstract Analysis