TY - BOOK AU - Zettl, Anton., TI - Sturm-Liouville theory T2 - Mathematical surveys and monographs SN - 9780821852675 U1 - 515.35 ZET PY - 2005/// CY - RI PB - American Mathematical Society KW - Analysis KW - Sturm-Liouville equation N1 - Includes bibliographical references and index ER -