1. Dechamps, G. A., "Ray techniques in electromagnetics," Proc. IEEE, Vol. 60, 1022-1035, 1972.
2. Felson, L. B., Hybrid Formulation of wave Propagation and Scattering, Nato ASI Series, 1984.
3. Chapman, C. H. and R. Drummond, "Body wave seismograms in inhomogeneous media using Maslov asymptotic theory," Bull. Seismol., Vol. 72, 277-317, 1982. Google Scholar
4. Fuks, I. M., "Asymptotic solutions for backscattering by smooth 2D surfaces," Progress In Electromagnetics Research, Vol. 53, 189-226, 2005.
doi:10.2528/PIER04092102 Google Scholar
5. Martinez, D., F. Las-Heras, and R. G. Ayestaran, "Fast methods for evaluating the electric field level in 2D-indoor enviroments," Progress In Electromagnetics Research, Vol. 69, 247-255, 2007.
doi:10.2528/PIER06122105 Google Scholar
6. Kravtsov, V. A., "Two new methods in the theory of wave propagation in inhomogeneous media (review)," Sov. Phys. Acoust., Vol. 14, No. 1, 1-17, 1968. Google Scholar
7. Ziolkowski, R. W. and G. A. Deschamps, "Asymptotic evaluation of high frequency field near a caustic: An introduction to Maslov's method," Radio Sci., Vol. 19, 1001-1025, 1984. Google Scholar
8. Hongo, K. and Yu Ji., "High-frequency expression for the field in the caustic region of a reflector using Maslov's method," Radio Sci., Vol. 21, No. 6, 911-919, 1986. Google Scholar
9. Hongo, K. and Yu Ji, "High-frequency expression for the field in the caustic region of a cylindrical reflector using Maslov's method," Radio Sci., Vol. 22, No. 3, 357-366, 1987. Google Scholar
10. Maslov, V. P., Perturbation Theory and Asymptotic Method, Moskov., 1976.
11. Gorman, A. D., "Vector field near caustics," J. Math. Phys., Vol. 26, 1404-1407, 1985.
doi:10.1063/1.526954 Google Scholar
12. Felson, L. B. and N. Marcuvitz, Radiation and Scattering of Waves, Prentice-Hall, 1973.
