The problem of eigenvalues and turning points in the theory of systems of linear differential equations
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Publication:1236695
DOI10.1007/BF01094127zbMath0354.34059MaRDI QIDQ1236695
S. F. Feshchenko, N. A. Sotnichenko
Publication date: 1977
Published in: Ukrainian Mathematical Journal (Search for Journal in Brave)
Linear ordinary differential equations and systems (34A30) Singular perturbations, turning point theory, WKB methods for ordinary differential equations (34E20) Ordinary differential operators (34L99)
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