TY - BOOK T1 - Eigenfunction expansions associated with second-order differential equations A1 - Titchmarsh, E.C LA - English PP - Oxford PB - Clarendon Press YR - 1946 UL - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/das.765 OP - 175 KW - Análisis Matemático ER -