Geometric methods in mathematical physics : proceedings of an NSF CBMS Conference held at the University of Lowell Massachusetts March 19 23 1979 Geometric aspects of global bifurcation in nonlinear elasticity The branching of solutions of Einsteins equations What does supergravity teach us about gravity Classical 1 2 spin particles interacting with gravitational fields: A supersymmetric model Generalized constraint algorithm and special presymplectic manifolds Deformations and quantization Holomorphic gauge theory A geometric variational formalism for the theory of nonlinear waves Geometry of jet bundles and the structure of lagrangian and hamiltonian formalisms Involution theorems.