Citazione APA

Titchmarsh, E. C. Eigenfunction expansions associated with second-order differential equations.

Stile di citazione Chicago

Titchmarsh, E. C. Eigenfunction Expansions Associated with Second-order Differential Equations.

Citazione MLA

Titchmarsh, E. C. Eigenfunction Expansions Associated with Second-order Differential Equations.

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