Babich, V. M. On the asymptotics of Green’s functions for certain wave problems. I: Stationary case. (English. Russian original) Zbl 0249.35016 Math. USSR, Sb. 15(1971), 513-533 (1972); translation from Mat. Sb., n. Ser. 86(128), 518-537 (1971). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document MSC: 35J05 Laplace operator, Helmholtz equation (reduced wave equation), Poisson equation PDF BibTeX XML Cite \textit{V. M. Babich}, Math. USSR, Sb. 15, 513--533 (1972; Zbl 0249.35016); translation from Mat. Sb., n. Ser. 86(128), 518--537 (1971) Full Text: DOI