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Problems of the spectral theory of the second order linear differential equation with unbounded operator coefficients - MaRDI portal

Problems of the spectral theory of the second order linear differential equation with unbounded operator coefficients (Q2549498)

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Problems of the spectral theory of the second order linear differential equation with unbounded operator coefficients
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    Problems of the spectral theory of the second order linear differential equation with unbounded operator coefficients (English)
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    1972
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