Journal of Differential Equations · 1988 · 56 citations · 2 references
Natural SciencesMathematicsPhysicsDifferential EquationsMathematical PhysicsEigenvalue ProblemsInverse Problems In MechanicsOperator TheorySpectral AnalysisSpectral MethodsSpectral TheoryEigenfunction ExpansionsInverse Spectral ProblemsNonlinear Spectral ProblemsSturm - Liouville TheorySturm-liouville Theory
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Scattering theory of waves and particles
G. Breit · Journal of the Franklin Institute · 1967 · 2.1K citations
Fourier-analysis, selfadjointness
Gian‐Carlo Rota · Advances in Mathematics · 1976 · 229 citations