Habilitationsschrift: Aspects of Singularity Theory (1993)
darin:
1. On the Base Space of a Semi-Universal Deformation of Rational Quadruple Points
2. On the Deformation Theory of Rational Surface Singularities with Reduced Fundamental Cycle
3. Tree singularities: Limits, Series and Stability
4. Periodic Orbits near a Resonant Equilibrium Point
5. Quotient Spaces and Critical Points of Invariant Functions for C*-Actions
6. A Note on the Discriminant of a Space Curve
7. A quinic Hypersurface in P4 with 130 Nodes