1. : Monotonie: Lösbarkeit und Numerik bei Operatorgleichungen. Springer Tracts in Natural Philosophy, Bd. 25, Springer-Verlag, Berlin 1974.
2. : Activator actions initiating the cascade of vision. To appear in: Strehmel, K. (ed.): Proc. 5th Seminar NUMDIFF-5, Halle 1989. Teubner-Texte zur Mathematik, Leipzig 1990.
3. : Structural amplification in chemical networks. Submitted for publication.
4. : Models for oszillations and excitability in biochemicala systems. In (ed.): Mathematical models in molecular and cellular biology. Cambridge University Press, Cambridge 1980, pp. 248–291.
5. ; : Matrix computations. North Oxford Academic Publishing Co., Oxford 1986.