Mathematical Proceedings of the Cambridge Philosophical Society · 1970 · 11 citations · 6 references
Natural SciencesElectrical EngineeringDifferential EquationsEigenvalue ProblemsSpectral TheoryBessel FunctionsEigenfunction Expansions
In this paper certain Bessel type eigenfunction expansions are developed by considering a non-seif-adjoint problem which involves a radiation type condition
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F. Ursell · Mathematical Proceedings of the Cambridge Philosophical Society · 1968 · 19 citations
D. B. Sears, E. C. Titchmarsh · The Quarterly Journal of Mathematics · 1950 · 18 citations