1. ‘The Kernel function and conformal mapping’, Amer. Math. Soc., Math. Surveys 5. Providence, R.I.: AMS, X. 257 p., 1970.
2. and , Clifford Analysis, Research Notes in Mathematics, Vol. 76, Pitman Advanced Publishing Program, London, 1982.
3. and , Introduction to Clifford Analysis, Lecture Notes, 1. European Intensive Course “Complex Analysis and it's generalizations”, preprint.
4. ‘Starke Elliptizität von Randintegraloperatoren erster Art’, Thesis, TH Darmstadt, 1984.
5. and , Clifford Algebra and Spinor-Valued Functions, Kluwer, Dordrecht, 1992.