TY - BOOK AU - Titchmarsh,E.C. AU - Titchmarsh, E. C. TI - Eigenfunction expansions associated with second-order differential equations PY - 1962///- CY - Oxford PB - Clarendon Press KW - Differential equations KW - Series, Infinite KW - Harmonic analysis KW - Boundary value problems KW - Eigenfunction expansions ER -