참고문헌
- J. Math. Mech. v.18 An operator valued function space integral and a related integral equations R. H. Cameron;D. A. Stovick
- Amer. Math. Soc. Colloq., Providence, Amer. Math. Soc.(rev.ed) v.XXXI Functional analysis and Semigroups E. Hille;R. S. Phillips
- Rev. Modern Phys. v.20 Space-time approach to non-relativistic quantum mechanics R. P. Feynman
- Phys. Rev. v.84 An operator calculus having applications in quantum electrodynamics R. P. Feynman
- Mem.Amer.Math. Soc. v.62 Generalized Dyson Series, generalized Feynman diagrams, Feynman integral, and Feynman’s operational calculus G. W. Johnson;M. L. Lapidus
- Methods of Modern Mathematical Physics(Rev. and enl. ed.) M. Reed;B. Simon
- Functional Analysis W. Rudin