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The spectral theory of periodic differential equations. (English) Zbl 0287.34016
Texts in Mathematics. Edinburgh-London: Scottish Academic Press. X, 130 p. £2.50 (1973).

MSC:
34L99 Ordinary differential operators
35P05 General topics in linear spectral theory for PDEs
34-02 Research exposition (monographs, survey articles) pertaining to ordinary differential equations
35-02 Research exposition (monographs, survey articles) pertaining to partial differential equations
34B05 Linear boundary value problems for ordinary differential equations
34B15 Nonlinear boundary value problems for ordinary differential equations
47A10 Spectrum, resolvent