01555    a2200253   4500003000500000005001700005010001600022020006000038020006000098040000900158082001400167100001800181245012100199260005100320300003300371490004600404505068500450650002701135650002001162650002501182700002001207740003401227830004001261Nust20221201090259.0  a   89011374  a0387191895 (Springer-Verlag New York Berlin Heidelberg)  a3540191895 (Springer-Verlag Berlin Heidelberg New York)  cNust00a535.4,BAB1 aBabich, V. M.10aShort-wavelength diffraction theory :basymptotic methods / cV.M. Babic V.S. Buldyrev ; translated by E.F. Kuester.  aBerlin ;aNew York :bSpringer-Verlag,cc1991.  axi, 445 p. :bill. ;c24 cm.1 aSpringer series on wave phenomena ;vv. 4  aThe Ray Method (Page-1), The field near a Caustic (Page-42), Derivation of Asymptotic Formulas for Eigenvalues and Eigenfunctions Using the Ray Method (Page-66), The Ray Method in the Small (Page-97), The Parabolic Equations’ Method (Page-131), Asymptotic Expansions of Eigenfunctions Concentrated (Page-145), Eigenfunctions Concentrated in the Neighborhood (Page-180), Eigenfunctions Concentrated in the Vicinity of Closed Geodesic (Page-214) Multiple Mirror Resonate (Page-258), The field of a point Source Located Near A Convex Curve (Page-285), Asymptotic Expansion of the green Functions (Page-306), The High Frequency Asymptotic of the field Scartted by Smooth Body (357). 0aAsymptotic expansions. 0aEigenfunctions. 0aX-raysxDiffraction.1 aBuldyrev, V. S.0 aShortwave diffraction theory. 0aSpringer series on wave phenomena ;