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The Fourier grid Hamiltonian method for bound state eigenvalues and eigenfunctions
, 1989C. Marston, G. G. Balint-Kurti
semanticscholar +1 more source
Note on Eigenfunction Expansions
Journal of the London Mathematical Society, 1952openaire +2 more sources
On Expansions in Eigenfunctions
Journal of the London Mathematical Society, 1939openaire +2 more sources

