Titchmarsh, E. C. Eigenfunction expansions associated with second-order differential equations.
Chicago Edition CitationTitchmarsh, E. C. Eigenfunction Expansions Associated with Second-order Differential Equations.
MLA Edition CitationTitchmarsh, E. C. Eigenfunction Expansions Associated with Second-order Differential Equations.
Warning: These citations may not always be 100% accurate.