1. C. DeWitt-Morette, G. Low, L. S. Schulman, A. Y. Shiekh: “Wedges I,” Foundations of Physics
16, 311–349 (1986).
2. The properties of Jacobi fields in configuration space and phase space, and the corresponding WKB approximations are scattered in several papers of Cécile DeWitt-Morette, John La Chapelle, Maurice Mizrahi, Bruce Nelson, Benny Sheeks, Alice Young, and Tian-Rong Zhang. For a summary of results obtained prior to 1984, see references [3, 4]. For more recent results, see reference [5].
3. Cécile DeWitt-Morette and Tian-Rong Zhang: “Path integrals and conservation laws,” Phys. Rev D
28, 2503–2516 (1983).
4. Cécile DeWitt-Morette: “Feynman path integrals, from the prodistribution definition to the calculation of glory scattering,” Acta Physica Austriaca Suppl.
XXVI, 101–170 (1984).
5. John La Chapelle: “Functional Integration on Symplectic Manifolds,” (Ph. D. Dissertation, The University of Texas at Austin, May 1995).