- Model Categories and Their Localizations
- Differential Topology
- Comparison Theorems in Riemannian Geometry
- Etale Cohomology
- The Topology of Fibre Bundles
- Homological Algebra
- Differential Forms in Algebraic Topology
- Quantum Gravity
- Diffeology
- Moduli Spaces of Riemannian Metrics
- Foundations of Algebraic Topology
- Fibre Bundles
- Riemann Surfaces
- Introduction to Topological Manifolds
- Algebraic Topology