1. Action principles and global geometry;Zuckerman,1987
2. Symplectic geometry of the covariant phase space;Crnković;Classical Quantum Gravity,1988
3. Covariant description of canonical formalism in geometrical theories;Crnković,1987
4. Local symmetries and constraints;Lee;J. Math. Phys.,1990
5. Covariant description of the canonical formalism;Barnich;Phys. Rev.,1991