34 Ordinary differential equations
34Mxx Differential equations in the complex domain
34M60 Singular perturbation problems in the complex domain (complex WKB, turning points, steepest descent) (1 articles)
- : A variant of the complex Liouville-Green approximation theorem. (English). Archivum Mathematicum, vol. 36 (2000), issue 3, pp. 213-218
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