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Connection formulas for second-order differential equations with multiple turning points. (English) Zbl 0344.34050

##### MSC:
 34E20 Singular perturbations, turning point theory, WKB methods for ordinary differential equations 34A30 Linear ordinary differential equations and systems, general 34A45 Theoretical approximation of solutions to ordinary differential equations 33C10 Bessel and Airy functions, cylinder functions, $${}_0F_1$$
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