TY - BOOK AU - Faris,William G. TI - Self-adjoint operators SN - 0387070303 (pbk.) : U1 - 510.82 PY - 1975/// CY - Berlin PB - Springer-Verlag KW - Selfadjoint operators KW - Perturbation (Mathematics) KW - Quantum theory N1 - Includes bibliographical references and index ER -