Esipov, A. A.; Yudovich, V. I. Aymptotic behaviour of the eigenvalues of the first boundary value problem for an ordinary differential equation in a long interval. (English) Zbl 0305.34041 U.S.S.R. Comput. Math. Math. Phys. 14(1974), No. 2, 67-75 (1975). MSC: 34L99 34E99 PDF BibTeX XML Cite \textit{A. A. Esipov} and \textit{V. I. Yudovich}, U.S.S.R. Comput. Math. Math. Phys. 14, No. 2, 67--75 (1975; Zbl 0305.34041) Full Text: DOI
Esipov, A. A.; Yudovich, V. I. Limiting behaviour of eigenvalues of boundary value problems in unbounded expanding domains. (English) Zbl 0274.47026 U.S.S.R. Comput. Math. Math. Phys. 13(1973), No. 2, 184-198 (1974). MSC: 47F05 35P05 PDF BibTeX XML Cite \textit{A. A. Esipov} and \textit{V. I. Yudovich}, U.S.S.R. Comput. Math. Math. Phys. 13, No. 2, 184--198 (1974; Zbl 0274.47026) Full Text: DOI