asymptotic methods Babich, V. M. creator Buldyrev, V. S. Berlin New York Springer-Verlag c1991 xi, 445 p. : ill. ; 24 cm. The 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). V.M. Babic V.S. Buldyrev ; translated by E.F. Kuester. Asymptotic expansions Eigenfunctions X-rays Diffraction 535.4,BAB 0387191895 (Springer-Verlag New York Berlin Heidelberg) 3540191895 (Springer-Verlag Berlin Heidelberg New York) 89011374 20221201090259.0