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Global theory of a second order linear ordinary differential equation with a polynomial coefficient. (English) Zbl 0322.34006
North-Holland Mathematics Studies. 18. Amsterdam - Oxford: North-Holland Publishing Company; New York: American Elsevier Publishing Company, Inc. XV, 290 p. Dfl. 45.00; $ 18.75 (1975).

34M99 Ordinary differential equations in the complex domain
34-02 Research exposition (monographs, survey articles) pertaining to ordinary differential equations
34A30 Linear ordinary differential equations and systems, general
34L99 Ordinary differential operators
34E05 Asymptotic expansions of solutions to ordinary differential equations
34E15 Singular perturbations, general theory for ordinary differential equations
30D05 Functional equations in the complex plane, iteration and composition of analytic functions of one complex variable