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School of Mathematics:

- Differential systems and isometric embeddings. Annals of Mathematics Studies, 114. The William H. Roever Lectures in Geometry
- Exterior differential systems. Mathematical Sciences Research Institute Publications, 18
- Exterior differential systems and Euler-Lagrange partial differential equations
- Deformations of G-structures, Part A: General theory of deformations
- On the theory of variation of structures defined by transitive, continuous pseudogroups
- Deformations of G-structures, Part B: Deformations of geometric G-structures
- On the existence of a locally complete germ of deformation of certain G-structures
- Exterior differential systems
- Pfaffian Systems in Involution
- Some aspects of exterior differential systems. Complex geometry and Lie theory
- Characteristic cohomology of differential systems, I. General theory
- Characteristic cohomology of differential systems, II. Conservation laws for a class of parabolic equations
- Hyperbolic exterior differential systems and their conservation laws. I.
- Hyperbolic exterior differential systems and their conservation laws. II
- Toward a geometry of differential equations
- Exterior differential systems and Euler-Lagrange partial differential equations
- Exterior differential systems and variations of Hodge structures