Benedek, Agnes Ilona
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On certain non harmonic Fourier expansion as eigenfunction expansions of non regular Sturm-Liouville systems
1974
2235
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On inverse eigenvalue problems for a second-order differential equation with parameter contained in the boundary conditions
1980
1837
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Notas de algebra y análisis. 20 : Remarks on a theorem of Å. Pleijel and related topics
2007
1343
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