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Lecture Notes in Mathematics; Ordinary Differential Equations and Operators ,
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On the spectral theory of some nonsymmetric second order di..:
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Ordinary and Partial Differential Equations; Lecture Notes in Mathematics ,
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Sectorial second order differential operators:
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Ordinary and Partial Differential Equations; Lecture Notes in Mathematics ,
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Differential operators with discrete spectrum:
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The Deficiency Index Problem for Powers of Ordinary Differe..
Lecture Notes in Mathematics ; 621;SpringerLink, Bücher;Springer eBook Collection, Mathematics and Statistics
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Ordinary and Partial Differential Equations; Lecture Notes in Mathematics ,
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